Two Causal Relationships and One Correlation (Two Truths and a Lie)
Create three sets of two variables so that two sets describe causal relationships and one describes a correlation between the variables.
For example, one set of two variables that represent a causal relationship would be The number of people eating at a restaurant vs. The amount of food needed.
Please reply to the prompt and respond to two other students posts. You will earn 10 points for your initial response and 5 points for each reply. Students
may earn a max of 20 points.
How to respond to other posts:
• In one response, guess which set of variables represent the correlation.
. In the second response, describe how you could alter one of their causal relationships so it instead describes a borrelation.

Answers

Answer 1

However, a correlation between two variables does not always imply that a change in one variable is the reason for a change in the values of the other. There is a causal link between the two occurrences, which means that causation shows that one event is the outcome of the occurrence of the other event.

Causal relationships between variables may consist of direct and indirect effects. Direct causal effects are effects that go directly from one variable to another. Indirect effects occur when the relationship between two variables is mediated by one or more variables.

Direct and indirect effects may make up causal connections between variables. Effects that flow directly from one variable to another are referred to as direct causal effects. When one or more factors mediate the link between two variables, indirect effects result.

What are examples of causal relationships?

Causal relationships: A causal generalization, e.g., that smoking causes lung cancer, is not about an particular smoker but states a special relationship exists between the property of smoking and the property of getting lung cancer.

To learn more about  variables visit:

https://brainly.com/question/2466865

#SPJ1


Related Questions

Madelyn is throwing a pizza party. She has 6 pounds of cheese available and she
needs 1/2 pound of cheese to make each pizza. How many pizzas can she make?

Answers

Answer:

She can make 12 pizzas

Step-by-step explanation:

There are 2 halves in a pound, so you'll need to do 6 × 2 = 12.

What is the surface area of the cylinder with height 7 mi and radius 5 mi? Round your answer to the nearest thousandth.

Answers

To find the surface area of a cylinder, you can use the formula:

surface area = 2 * pi * r * h + 2 * pi * r^2

where r is the radius of the cylinder and h is the height of the cylinder.

Plugging in the given values, we get:

surface area = 2 * pi * 5 * 7 + 2 * pi * 5^2
= 70 * pi + 50 * pi
= 120 * pi

The surface area of the cylinder is approximately 377.7 square miles. Rounding to the nearest thousandth, the answer is 377.7 square miles.

Bernard was going on an 3.5 kilometre bushwalk. He needs 1.2 litres of water for every 1.4 kilometres he walks. He only has 500 mL water bottles. How many water bottles will he need to take to make sure he has enough water for his walk?

Answers

The number of water bottles Bernard needs to complete a 3.5 kilometer bush walk is 6 bottles of 500 mL

The number of water bottles = 6

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the number of water bottles required be = A

Now , the equation will be

The total distance of the bush walk = 3.5 km

Bernard's requirement of water for every 1.4 km = 1.2 L of water

So , Bernard's requirement of water for every 3.5 km = ( total distance of the bush walk / 1.4 ) x 1.2 L

Substituting the values in the equation , we get

Bernard's requirement of water for every 3.5 km = ( 3.5 / 1.4 ) x 1.2 L

Bernard's requirement of water for every 3.5 km = 2.5 x 1.2 L

Bernard's requirement of water for every 3.5 km = 3 L

Now , the amount of water one water bottle can hold = 500 mL

The value of 3 L = 3000 mL

So , the number of water bottles required to hold 3 L = 3000 / amount of water one water bottle can hold

Substituting the values in the equation , we get

The number of water bottles required to hold 3 L = 3000 / 500

The number of water bottles required to hold 3 L = 6 water bottles

Therefore , the value of A is 6 water bottles

Hence , The number of water bottles Bernard needs to complete a 3.5 kilometer bush walk is 6 bottles of 500 mL

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ1

At the city museum, child admission is $5.60 and adult admission is $9.50. On Friday, 170 tickets were sold for a total sales of $1228.90. How many child tickets were sold that day?

Answers

The number of child tickets sold is 99.

What is a system of equations?

A system having more than two equations is known as a system of equations.

Given that, the cost of a child ticket and the cost of an adult ticket are $5.60 and $9.50 respectively.

Let the number of child tickets sold and the number of adult tickets sold be s and a, then

s + a = 170

a = 170 - s

The total cost of s child tickets and a adult tickets is:

5.6s + 9.5a = 1228.90

Substitute a= 170 -s into the above equation:

5.6s + 9.5(170 - s) = 1228.90

5.6s + 1615 - 9.5s = 1228.90

3.9s = 386.1

s = 99

Hence, the number of child tickets sold is 99.

Learn more about the system of equations:

https://brainly.com/question/24065247

#SPJ1

Find the distance between each pair of parallel lines with the given equations Y=7. Y = -1

Answers

The distance between the two parallel lines with the equations y = 7 and

y = -1 is 8 units

What is the distance of a line between 2 points?

The distance of a line between 2 points is always positive and given by the formula

Let the first point be A ( x₁ , y₁ ) and the second point be B ( x₂ , y₂ )

The distance between A and B is D , and the distance D is

[tex]Distance D = \sqrt{(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2} }[/tex]

Given data ,

Let the equation of line be y = 7 and y = -1

Now , the slope of both the lines is 0

Slope m = 0

And the y intercept of the equation 1 or line 1 is = 7

So , the point is ( 0 , 7 )

And the y intercept of the equation 2 or line 2 is = -1

So, the point is ( 0 , -1 )

Now , the distance between the points ( 0 , 7 ) and ( 0 , -1 )  is given by the equation ,

[tex]Distance D = \sqrt{(x_{2}-x_{1})^{2} + (y_{2}-y_{1})^{2} }[/tex]

Substituting the values in the equation , we get

Distance D = √ ( 7 - ( - 1 ) )²

Distance D = √ ( 8 )²

Distance D = 8 units

Therefore , the value of D is 8 units

Hence , The distance between the two parallel lines with the equations y = 7 and y = -1 is 8 units

To learn more about distance between 2 points click :

https://brainly.com/question/18234495

#SPJ1

A andwich hop erve 4 ounce of meat and 3 ounce of cheee on each andwich. After making andwiche for an hour the hop owner ha ued 91 combined ounce of meat and cheee
How many combined ounce of meat and cheee are ued on each andwich?

Answers

The combined ounces of meat and cheese used on each sandwich is 7 ounces and the combined ounces of meat on all sandwiches is 52 ounces and that of cheese on all sandwiches is 39 ounces.

We have the following information:

A sandwich hop serve 4 ounce of meat and 3 ounce of cheese on each sandwich. After making sandwiches for an hour the hop owner has used 91 combined ounce of meat and cheese.

Now, we know the combined ounces of meat and cheese for 1 sandwich will be given as follows:

Ounces of meat + ounces of cheese

4+3

7 ounces

Now, in an hour 91 ounces of combined cheese and meat are used.

So, we have the following expression:

Number of sandwiches made in 1 hour = Total ounces used/ounces used in 1 sandwich

Number of sandwiches = 91/7

Number of sandwiches = 13

Ounces of meat used in 13 sandwiches = 13*4

Ounces of meat used in 13 sandwiches = 52 ounces

Ounces of cheese used in 13 sandwiches = 13*3

Ounces of cheese used in 13 sandwiches = 39 ounces

Hence, the combined ounces of meat and cheese used on each sandwich is 7 ounces and the combined ounces of meat on all sandwiches is 52 ounces and that of cheese on all sandwiches is 39 ounces.

To know more about combined ounces of meet and cheese here

https://brainly.com/question/17055514

#SPJ4

It takes Sandra 1 hour to word process 4.5 pages. At this rate, how long will she take to complete 29
pages?

Answers

It takes Sandra 6.44 hour to word process 29 pages.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

It takes Sandra 1 hour to word process 4.5 pages.

Now,

Since, It takes Sandra 1 hour to word process 4.5 pages.

Hence, The time to make 29 pages = 29/4.5

                                                        = 290/45

                                                        = 58/9 hours

Thus, It takes 6.44 hours to complete 29 pages.

Learn more about the divide visit:

https://brainly.com/question/315081

#SPJ1

The sum of two numbers is 20, and
the sum of their squares is 218. Find
the numbers.

Answers

The two numbers whose sum is 20 and sum of their squares is 218 are

13 and 7 respectively.

What is a numerical expression?

A mathematical statement expressed as a string of numbers and unknowable variables is known as a numerical expression. Statements can be used to create numerical expressions.

Let, The two numbers be a and b.

Given, The sum of two numbers is 20 which is, a + b = 20...(1) and the sum of their squares is 218 which is, a² + b² = 218...(2)

We know, (a + b)² = a² + 2ab + b².

Therefore, 20² = 218 + 2ab.

2ab = 400 - 218,

2ab = 182.

ab = 91...(3)

Now, (a - b)² = a² + b² - 2ab.

(a - b)² = 218 - 182.

(a - b)² = 36.

a - b = 6...(4).

Adding (1) and (4) we get,

2a = 26.

a = 13 and hence b = 7.

learn more about numerical expressions here :

https://brainly.com/question/29199574

#SPJ1

Solve each system by eliminantion: -5x+3y=6 x-y=4

Answers

Answer: x = -9 , y = -13

Step-by-step explanation:

Multiply the second equation by 5, then add the equations together.

(−5x+3y=6)

5(x−y=4)

Becomes:

−5x+3y=6

5x−5y=20

Add these equations to eliminate x:

−2y=26

Then solve −2y=26 for y:

−2y = 26

Divide both sides by -2

y= -13

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

−5x+3y=6

Substitute−13 for y in −5x+3y=6:

−5x+(3)(−13)=6

−5x−39=6 (Simplify both sides of the equation)

−5x−39+39=6+39 (Add 39 to both sides)

−5x=45

Divide both sides by -5

x = -9

hope it help

you can proof it in the first equation if you want

stella opens her bank account with $500. She deposits $40 each month into the account. What function shows the amount in Stella's bank account after m months?

Answers

Answer:

f(x) = 500+40m

Step-by-step explanation:

500 = initial

40m because she deposits 40 each month

500 +40m

The 500 is the opening amount
40 is the monthly deposit

The question is in the image

Answers

Answer:

The length of side B is 6.25, The length of side A is 8.75, The scale factor is 0.25

Step-by-step explanation:

Divide the left side of the first model by the left side of the scaled version

60 / 15 = 4

divide side A and B by the result

35 / 4 = 8.75

25 / 4 = 6.25

Question is attached ​

Answers

Answer:

Question 62. B) 8Question 63. D) 4/3

--------------------

Question 62

From the series we can observe:

The first term of the GP is t = 1/2, The common ratio is r = - 1/2,The nth term is - 1/256.

Use the nth term equation to find the value of n:

[tex]t_n=t*r^{n-1}[/tex]

Apply this to the last term and solve for n:

[tex]-1/256=1/2*(-1/2)^{n-1}[/tex][tex]-1/128= (-1/2)^{n-1}[/tex][tex](-1/2)^7=(-1/2)^{n-1}[/tex][tex]n-1=7[/tex][tex]n=8[/tex]

--------------------------------------------------------------------

Question 62

Given

Infinite sequence:

2, - 1, 1/2, - 1/4, 1/8, ...

It has:

t = 2, r = - 1/2

Find the sum of terms:

S = t / ( 1 - r)S = 2 /( 1 + 1/2) = 2 / (3/2) = 4/3

Correct choice is D.

Complete the quadratic polynomial by filling in the number that makes it a perfect-square.



​ \mathrm{x}^{2} + 18 \mathrm{x} +x
2
+18x+

Answers

To make the quadratic polynomial x² + 18x into a perfect square, we add 81 to it.

What is a quadratic polynomial?

A quadratic polynomial is a polynomial in which the highest power of the unknown is 2.

What is a perfect square?

A perfect square is a number suvh that it is equal to another number multiplied by itself

How to make the quadratic polynomial a perfect square?

Since we have the quadratic polynomial x² + 18x, and we wnat to convert it to a perfect square.

To be a perfect square, we want it in the form (x + a)² = x² + 2ax + a²  (1)

Compring the quadratic polynomial with equation (1), we have that

2a = 18

a = 18/2

a = 9

⇒ a² = 9² = 81

So, substituting a = 9 into equation (1), we have

(x + a)² = x² + 2ax + a²

(x + 9)² = x² + 2(9)x + 9²

= x² + 18x + 81

Thus we see that to make  x² + 18x into a perfect square, we add 81 to it.

Learn more about perfect square polynomial here:

https://brainly.com/question/24489116

#SPJ1

how would this two triangles be called

Answers

The triangles ΔUST and ΔVRQ are congruent to each other by the SSS postulates.

What is the triangle?

The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180 °.

The ratio of the matching sides will remain constant if two triangles are comparable to one another.

In triangles ΔUST and ΔVRQ, then we have

TU = QV (Given)

ST = QR (Given)

UV = SR

Add RU on both sides, then we have

UV + RU = SR + RU

RV = SU

The triangles ΔUST and ΔVRQ are congruent to each other by the SSS postulates.

More about the triangle link is given below.

https://brainly.com/question/25813512

#SPJ1

A bookstore took in $167 on sale of 5 copies of a new cookbook and 3 copies of a new novel. The next day it took in $89 on the sales of 3 copies of the cookbook and 1 copy of the new novel. What was the price of each book.
Hint: use elimination or substitution

Answers

The price is $14 for each novel and $25 for each Cookbooks when a bookstore made $167 on the sale of 3 new novels and 5 copies of a new cookbook.

Given that,

A bookstore made $167 on the sale of 3 new novels and 5 copies of a new cookbook. Three cookbook copies and one copy of the brand-new book were sold the next day, bringing in $89 for the company.

We have to find what the cost of each book was.

We know that,

A bookstore took in$ 167 on the sale of 5 copies of a new cookbook and 3 copies of a new novel.

The next day it took in $ 89 on the sale of 3 copies of the cookbook and 1 copy of the novel.

What is System of equation?

An algebraic expression-based system of equations is a collection of relationships between several unknown variables.

Now,

Let x= cookbook and y= novel.

So,

On first day, 5x + 3y = 167----->equation(1)

On second day, 3x + 1y = 89----->equation(2)

These equations must be solved in order to determine the cost of each book.

From equation(2), we get;

y = 89 - 3x

Now we use this x solution to solve our first equation.

We get;

5x + 3(89-3x) = 167

5x + 267 - 9x = 167

267-167 = 9x - 5x

100 = 4x

x = 25

So, The price is $25 for the each Cookbooks.

Now, By substituting $25 for x in the second equation, we must get the value of y.

y=89-3(25)

y=89-75

y=14

So, The price is $14 dollars for each novel.

So,

Therefore, The price is $14 for each novel and $25 for each Cookbooks when a bookstore made $167 on the sale of 3 new novels and 5 copies of a new cookbook.

To learn more about price visit: https://brainly.com/question/15075941

#SPJ1

A cone has a radius of 8 m and a height of 30 m. What is the volume of the cone in terms of pi?

Answers

Answer:

640[tex]\pi[/tex]

Step-by-step explanation:

The formula for a cone is [tex]\pi r^2*h/3[/tex].r meaning Radius and h meaning Height.Your looking for the answer in terms of [tex]\pi[/tex] so you would take the [tex]\pi[/tex] out of the equation making it [tex]r^2*h/3[/tex].Insert your values in their respective locations, r becoming 8, and h becoming 30.Solve your equation of [tex]8^2*30[/tex]/3 getting 640.Add [tex]\pi[/tex] to the end.

Answer:

640π

Step-by-step explanation:

The formula for a cone volume is

[tex]V = \pi r^{2} \frac{h}{3} \\\\V = \pi 8^{2} \frac{30}{3} \\\\V = \pi 64 * 10 \\\\V = 640\pi[/tex]

based on the angle measures list the sides (AB,BC, and AC). In order from shortest to longest:

Answers

Order of Sides from smallest to largest is AC, BC , AB.

What is the order of Angles and Sides in a Triangle ?

Finding the Triangle's Angles and/or Sides in Order of Largest to Smallest

Step 1: As stated in the issue, sort the supplied angles or sides in the order of smallest to greatest or largest to smallest.

If the sides are supplied in the issue and we are requested to arrange the angles, step 2 is to find the angles that are opposite the given sides.

If the problem specifies the angles and asks us to arrange the sides, find the sides that are perpendicular to the provided angles.

The sides opposing the angles will be listed in the same sequence as step 1's first-identified sides. Therefore, the side across from the biggest angle will be the largest, and the side across from the smallest angle will be the smallest. The angles opposing the sides will also be in the same sequence as those found in step 1 for the angles. As a result, the angle opposite the side with the greatest length will be the largest, while the angle opposite the side with the lowest length will be the smallest.

angle B is smallest , so the smallest side is opposite side of angle B i.e AC.

Again angle C is largest so similarly AB is the largest.

Order of Sides from smallest to largest is AC, BC , AB

To learn more about Order of Sides refer to:

https://brainly.com/question/9418881

#SPJ1

Select all of the following functions that are quadratic. □ y=2x² 3=2x²-8 y=-2+2x-8 y + 3x = 2x² - 8 Oy+3x²= 2x + 3x²-8​

Answers

If the degree of the equation is two, then the result leads to the quadratic equation. The following equations are entitled to the quadratic equations.

[tex]- $\mathrm{y}=2 \mathrm{x}^2$- $\mathrm{y}=2 \mathrm{x}^2-8$- $y=2 x^2-3 x-8$[/tex]

What is a quadratic equation?

In the quadratic equation, the maximum power of the variable is 2 . It consists of  [tex]$x^2, x$,[/tex] and the constant term.

Given

1 .[tex]$y=2 x^2$[/tex]

2. [tex]$y=2 x^2-8$[/tex]

3. [tex]$\mathrm{y}=-2+2 \mathrm{x}-8$[/tex]

4.[tex]$\mathrm{y}+3 \mathrm{x}=2 \mathrm{x}^2-8$[/tex]

5. [tex]$\mathrm{y}+3 \mathrm{x}^2=2 \mathrm{x}+3 \mathrm{x}^2-8$[/tex]

If the power of x is 2 , then it is said to be a quadratic equation.

[tex]y=2 x^2[/tex]

The above expression is a quadratic equation.

2.

[tex]y=2 x^2-8[/tex]

The above expression is a quadratic equation.

3.

[tex]y=2 x-10[/tex]

The above expression is not a quadratic equation.

4.

[tex]\begin{aligned}\mathrm{y}+3 \mathrm{x} & =2 x^2-8 \\\mathrm{y} & =2 x^2-3 x-8\end{aligned}[/tex]

The above expression is a quadratic equation.

5.

[tex]\begin{aligned}\mathrm{y}+3 \mathrm{x}^2 & =2 x+3 x^2-8 \\\mathrm{y} & =2 x-8\end{aligned}[/tex]

The above expression is not a quadratic equation.

Thus, the third and fifth are not quadratic equations and the first, second, and fourth are quadratic equations.

To learn more about quadratic equation. visit:

https://brainly.com/question/17177510

#SPJ1

The Transportation Security Administration (TSA) is responsible for airport security. On some flights, TSA officers randomly select passengers for an extra security check before boarding. One such flight has 76 passengers (12 in first class and 64 in coach). TSA officers selected an SRS of 10 passengers for screening. Let p-hat be the proportion of first class passengers in this sample. So, assuming that you are checking for the probability of choosing a first class passenger out of all passengers on the flight. Is the 10% condition met in this case? Justify your answer. (POS 447#31)


- Yes, 10 passengers out of 76 is less than 10% of the population of the flight.

- yes, 10 passengers out of all passengers on all flights is less than 10% of the population

- No, 10 passengers is the population being studied and is not less than 10% of the 10 total

- No, 10 passengers out of 76 is more than 10% of the population of the flight.

Answers

The answer is -No, 10 passengers out of 76 is more than 10% of the population of the flight.

Kelli walk no more than 25 dog on Monday. M. Lincoln ha 5 dog that Kelli walk. The inequality hown can be ued to find x, the number of dog Kelli can walk on Monday in addition to M. Lincoln' dog. X 5 25 Which inequality repreent all poible value of x?

Answers

All potential values of x are represented by the inequality x≤20.

What is inequality?

A mathematical statement that demonstrates the equality of two expressions is known as an equation, whereas a statement that demonstrates the greater or smaller value of one expression is known as an inequality.

An inequality displays the difference between two variables, whereas an equation displays the equivalence of two variables.

So, the inequality that also represents all the possible values of x is:

On Mondays, Kelli walks no more than 25 dogs.

Also, Ms. Lincoln's five dogs are walked by Kelli.

Along with Ms. Lincoln's dogs, the inequality to determine how many additional dogs Kelli walks on Monday is written as:

x+5 ≤ 25

Take 5 away from both sides.

x + 5 - 5 ≤ 25 - 5

x ≤  20

Therefore, all potential values of x are represented by the inequality x≤20.

Know more about inequality here:

https://brainly.com/question/28964520

#SPJ4

Complete question:
Kelli walks no more than 25 dogs on Mondays. Ms. Lincoln has 5 dogs that Kelli walks. The inequality shown can be used to find x, the number of dogs Kelli can walk on Monday in addition to Ms. Lincoln's dogs. x + 5 25 Which inequality represents all possible values of x?

The number of rooms in a house is a function of the number of people who live in the house.
Which of the following statements must be true?
A. The domain of the function is the population of the town.
B. If there are four rooms in the house, then there are four people living in the house.
C. The domain of the function is the number of rooms in a house.
D. The domain of the function is the number of people who live in the house.

Answers

The domain of the function described in the problem is given as the number of people living in the house. The correct option is (D).

What is a function?

A function y = f(x) is a one to one relationship between two sets X and Y where the set X is called the domain and Y the range of function f(x) ans x ∈ X and y ∈ Y.

Suppose the number of rooms in the house be y.

And, the number of people is x.

As per the question, the function can be written as,

y = f(x)

From the definition of the function it is clear that all the possible values of x are domain and all values of y are range.

Thus, the domain of the function is number of people living in the house.

Hence, the domain of the function for the given case is the number of people living in house.

To know more about function click on,

https://brainly.com/question/21145944

#SPJ1

Which equation would have real zero(s) corresponding to the x-intercept(s) of the graph below?
-2-
Oy=-2² +4
O y= 2²
Oy-log₂ (x+2)+1
Oy-log₂ (x+2)

Answers

Answer:

A

Step-by-step explanation:

y = - 2² + 4

y = - 4 + 4

y = 0


(2,0)

The equation that has a real zero at x = 2 is y = -[tex]2^x[/tex] + 4.

Option A is the correct answer.

What is an equation?

An equation contains one or more terms with variables connected by an equal sign.

Example:

2x + 4y = 9 is an equation.

2x = 8 is an equation.

We have,

The graph shows an x-intercept at x = 2, which means that the function has a real zero at x = 2.

Now,

We can check which of the given equations has this property by plugging in x = 2 and seeing if the corresponding y-value is zero.

For y = [tex]-2^x[/tex] + 4,

y = -2² + 4 = 0

This equation has a real zero at x = 2.

For y = 2^x,

y = 2² = 4,

This equation does not have a real zero at x = 2.

For y = log₂(x + 2) + 1,

y = log₂(2 + 2) + 1 = log₂4 + 1 = 3

This equation does not have a real zero at x = 2.

For y = log₂(-x + 2),

-x + 2 < 0, which means that x > 2.

This equation does not have a real zero at x = 2.

Therefore,

The equation that has a real zero at x = 2 is y = -[tex]2^x[/tex] + 4.

Learn more about equations here:

https://brainly.com/question/17194269

#SPJ5

A parent function is a linear function of the form y=b.

True false question.
True
False

Answers

Answer: True

Step-by-step explanation:

If I remember not to mistake y=x is the parent functions. So y=b is the parent function! So this question is true.

the base of a parallelogram is 3 times that of the height. the area of the parallelogram is 48. find the height of the parallelogram.

Answers

Answer:

height = 4

Step-by-step explanation:

b = 3h

b * h = 48


3h * h = 48

3h² = 48

3/3 h² = 48/3

h² = 16

h = √16

h = 4


b = 4 * 3

b = 12

suppose that three in ten adults own an answering machine. a researcher selects a random sample of 38 adults, and is interested in the number of people in the sample will own an answering machine. a) find the probability that in a sample of 38, exactly 15 people own an answering machine. b) find the probability that in a sample of 38, at most 15 people own an answering machine.

Answers

A sample of 38 adults who has own an answering machine,

a) The probability that in a sample of 38, exactly 15 people own an answering machine is 0.061.

b) The probability that in a sample of 38, at most 15 people own an answering machine is 0.92381.

We have three in ten adults own an answering machine . That is probabilty of success, p = 3/10

Sample size, n = 38

Using Binomial Probability distribution,

X ~ Binom( 38, 0.3)

where X is random variable of adults has own an answering machine.

P(X= x) = ⁿCₓ (p)ˣ1-p)⁽ⁿ⁻ˣ⁾

The probability that in a sample of 38, exactly 15 people own an answering machine. , P(X= 15)

= ³⁸C₁₅(0.3)¹⁵ )(1 - 0.3)²³

= 38!/15!23! (0.3)¹⁵5(0.7)²³

= 0.06075 ~ 0.061

so, P(X= 15) = 0.061

b) The probability that in a sample of 38, at most 15 people own an answering machine, P(X<= 15)

Now, P(X≤ 15) = P( X= 1 ) + P(X= 2) + ... + P(X= 15) or 1 - P(X>15)

= 0.923814121

Hence, required probabilities

are 0.061 and 0.9238.

To learn more about binomial Probability distribution, refer:

https://brainly.com/question/29523224

#SPJ4

Variable costs of producing widgets include the cost of gas required to deliver the widgets to retailers. A widget producer finds the average cost of gas per widget. The expense equation was recently adjusted from E = 4.55q + 69,000 to E = 4.98q + 69,000 in response to the increase in gas prices.
a. Find the increase in the average cost per widget. Round to the nearest cent.

b. If the widgets are sold to retailers for $8.00 each, find the breakeven point prior to the adjustment in the expense function.
(unit)
($) (do not use commas in numbers over 1,000)
c. After the gas increase, the company raised its wholesale cost from $8 to $8.50. Find the breakeven point after the adjustment in the expense function. Round to the nearest integer.
(unit)
($) (do not use commas in numbers over 1,000)

Answers

The breakeven point after the adjustment in the expense function.

What is the revenue?

Revenue is the total amount producers receive after selling a good. Profit is the total amount producers earn after subtracting the production costs.

Revenue is the product of the number of units and the price per unit. It is given by:

Revenue = number of units * price per unit

Revenue = x * p(x)

Revenue = 8q Expense = 4.55q + 69,000

To find the breakeven point Revenue = Expense

8q = 4.55q + 69,000 3.3.45q = 69,000 q = 20,000

Equate both and find q

E = 4.55(20,000) + 69,000 = 160,000

E at q = 20,000

(20,000, 160,000)

Hence, the breakeven point after the adjustment in the expense function.

To learn more about the revenue visit,

https://brainly.com/question/19755858

#SPJ1

i need help in this asap✋✋✋✋✋

Answers

By using the property of congruency of triangles,

[tex]\angle V \cong \angle S[/tex] has been proved

What is congruency of triangles?

Two triangles are said to be congruent if the corrosponding angles are equal and the corrosponding sides are equal.

There are different axioms of congruency. They are

SSS axiom, SAS axiom, AAS axiom, ASA axiom, RHS axiom

UV [tex]\cong[/tex] ST [Given]

QR [tex]\cong[/tex] PQ [Given]

QT [tex]\cong[/tex] QU [Given]

PV [tex]\cong[/tex] RS [Given]

PT = PQ + QT [Additive Property of Length]

RU = QR + QU [Additive Property of Length]

PT = QR + QU [Substitution]

PT = RU [Transitive Property of Equality]

TV = UV + TU [Additive Property of Length]

SU = ST + TU [Additive Property of Length]

TV = ST + TU [Substitution]

SU = TV [Transitive Property of Equality]

[tex]\angle[/tex]SUR [tex]\cong[/tex] [tex]\angle[/tex]VTP [QT = QU]
[tex]\Delta USR \cong \Delta TVP[/tex] [SAS axiom]

[tex]\angle V \cong \angle S[/tex] [Corrosponding parts of congruent triangles are congruent]

To learn more about congruency of triangles, refer to the link-

brainly.com/question/2938476

#SPJ1

A runner runs 2 miles in 9.56 minutes. How many meters per second is this? Explanation please
Thank you!

Answers

Answer: 2 miles

Step-by-step explanation:

A relation i plotted a a linear function on the coordinate plane tarting at point A (0, 3)and ending at point B (2, 7). What i the rate of change for the linear function and what i it initial value? Select from the drop-down menu to correctly complete the tatement. The rate of change i Chooe. And the initial value i Chooe.

Answers

The rate of change is 2 and initial value is 3.

Given points A (0,3) B(2,7)

What is the slope of line joining between point A and point B

if let's suppose A(x1,y1) B(x2,y2)

then slope(m) = y2-y1/x2-x1

x1=0,y1=3

x2=2 y2= 7

slope(m) = 4/2 = 2

The ratio between the change in the values of the y variables and the change in the values of the x variables is known as the rate of change. The rate of change is the slope of the line if the rate of change is linear and constant.

Rate of change of linear function is also know as slope of that linear function.

So here slope itself is the rate of change.

Initial value is 3 as Coordinate of A is (0,3).

Given Question is incomplete Complete Question here

A relation is plotted as a linear function on the coordinate plane starting at point A (0, 3)and ending at point B (2, 7) .

What is the rate of change for the linear function and what is its initial value?

Select from the drop-down menus to correctly complete the statements.

The rate of change is____ and the initial value is___ .

To know more about slope here

https://brainly.com/question/3605446

#SPJ4

If we randomly select a U.S. female, is (pregnant and over 55) = (0.06)(0.27) = 0.0162? Why or why not?

Answers

No, because being older than 55 and being pregnant are not independent events.

If we randomly select a U.S. female, is (pregnant and over 55) = (0.06)(0.27) = 0.0162 because being older than 55 and being pregnant are not independent events.

A random number is one that is selected by chance, or randomly, from a set of numbers, as the name suggests. There is an equal chance that any one of the numbers in a given distribution will be chosen at random.

The concepts of randomness are formally defined in the fields of mathematics, probability, and statistics. A random variable in statistics is the process of assigning a numerical value to each potential result of an event space. The identification of the events and the estimation of their probabilities are made easier by this association.

To learn more about random number visit:https://brainly.com/question/29582166

#SPJ1

Other Questions
The passage in the previous question is told mainly in the____ tense, from a ____ point of view A. past tense; first-person B. past tense; third-person C. present tense; first-person D. present tense; third-person A force of 400 newtons stretches a spring 2 meters. A mass of 50 kilograms is attached to the end of the spring and is initially released from the equilibrium position with an upward velocity of 10 m/s. Find the equation of motion. a client seeks medical attention for a hoarseness that has lasted for more than 2 weeks. which additional finding indicates to the nurse that the client may need to be evaluated for cancer of the larynx? if a rock is buried and subjected to high heat and pressure, then uplifted, exposed eroded away, and deposited, what rock types were involved in the sequence? Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 4 liters of natural oil for every 7 liters of synthetic oil. In order to make 825 liters of Petrolyn oil, how many liters of natural oil are needed? What element of a myth is featured in the title "The Beginnings of the Maasai?an attempt to explain a supernatural godan attempt to explain a fantastic settingan attempt to explain an originan attempt to explain a conflict For each value of u, determine whether it is a solution to 9u-765. which of the following are possible rational roots of the polynomial functioncheck all that applyF(x)=2x^2-3x+7a.+_2b.+_1/2c.+_1d.+_1/7e.+_7help me A spring scale that reads in grams uses a 10.0-cm-long spring. Hanging a water bottle from the scale stretches the spring to 11.5 cm and causes the scale to read 350 g. Find the amount that results from the given investment.$600 invested at 6% compounded quarterly after a period of 4 yearsAfter 4 years, the investment results in $.(Round to the nearest cent as needed.) a postoperative client will need to perform daily dressing changes after discharge. which outcome response best demonstrates the client's readiness to manage wound care after discharge How can I create this code this in Python?Use the random module to generate a random number, prompt the user for a guess at the number until the user guesses the number. When the guess is too high, let the user know, when too low let them know, and when they guess it let them know it was correct and in how many guesses. billiard ball is rolled off of a table onto the floor below in projectile motion. If the speed at which the bowling ball left the table was 12m/s, then what is the x-component of the velocity of the bowling ball at the instant before it strikes theground? consider the following electron configurations to answer the questions that follow: (i) 1s2 2s2 2p6 3s1 (ii) 1s2 2s2 2p6 352 (iii) 1s2 2s2 2p6 3s2 3p1 (iv) 1s2 2s2 2p6 3s2 3p4 (v) 1s2 2s2 2p6 3s2 3p5 the electron configuration of the atom with the most negative electron affinity is What is the pressure exerted on the ground by a 5-kg box that has a width of 5 m and a length of 10 m? The diagram below shows an enzyme and a substrate it can bind. How does the structure of this enzyme help with its function?A. Since the enzyme is larger than the substrate, catalytic reactions can occur within the enzyme itself.B. Since the enzyme's shape matches the substrate's shape, it catalyzes only reverse reactions.C. The enzyme's shape complements the substrate's shape, so it only catalyzes specific reactions.D. The enzyme's active site is amorphous and can change its shape to fit any substrate. Cytotoxic T-lymphocytes recognize:- Receptors on B-lymphocytes.- Fragments of self proteins of infected cells- Antigens and MHC class I- Antigens and MHC class II which point is not on the graph of 5x+6y=-42 23. For the data in the table, does y vary directly with x? If it does, write an equation for the direct (1 point) variation.yes; y=2 xyes; y=5 xyes; y=7 xno; y does not vary directly with x. n all of milgram's obedience experiments, participants were deceived aboutmilgram's professional status as a research psychologist.the amount of shock the victim actually received.how much thy would actually be paid for participating in the research.the association of the research with a prestigious university.