how can confidence intervals help researchers attain their purpose of using a sample to understand a population?

It is possible that someone else collecting a different sample from the same population and measuring the same variable would calculate the same sample statistic, but it is not guaranteed.

Statistical measures that are derived from samples of data rather than the complete population are called sample statistics. A population parameter, such the mean or standard deviation, is estimated using this method. Depending on the type of data and the research issue being examined, sample statistics can be estimated using a variety of formulae and techniques. For instance, to get the sample mean, multiply the sum of all the observations in the sample by the total number of observations. The sample standard deviation is calculated by taking the square root of the sum of the squared differences between each observation and the sample mean. In research studies and surveys, sample statistics are frequently utilized to draw conclusions about the population.

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answer:

see explanation.

step-by-step explanation:

for all the x values, subtract 1 and for all y values, subtract 3. the end result should be more left and more down than the original shape. hope that helps!

Answer:

t-(-1,-3)     y-(-4,1)    m-(-4,-3)   q-(-3,-3)

Step-by-step explanation:

becuaes you subtrace on on each xvariable and you subtracte 3 on every y varibale

Answer:

4

Step-by-step explanation:

Answer:

x>−4

Step-by-step explanation:

−8<x−4

Swap sides so that all variable terms are on the left hand side. This changes the sign direction.

x−4>−8

Add 4 to both sides.

x>−8+4

Add −8 and 4 to get −4.

x>−4

Answer:

The plant was able to produce 2515 computer chips in 3 months

Step-by-step explanation:

You just have to sustitute

each month

f(x)= 5(x) + 2500

3 months

f(3) = 5(3) +2500    

f(3) = 2515

Hope it helps u

Answer: A

Step-by-step explanation: its ironic that i just had a quiz with this question on it but i got a 95 and i got to see the answers i got wrong and i got this one right.

Answer:

y = -1/3x + 2

Step-by-step explanation:

Slope-intercept form of a linear equation is written as:

y = mx + b, where x and y are coordinates from one of the points on the line, m is the slope, and b is the y-intercept.

1. You'll first want to find the slope, m. Slope can be calculated from two points by using the equation (y1 - y2)/(x1 - x2). If you plug your two points into this equation for x and y (making sure that y1 and x1 are from the same point and y2 and x2 are from the other), you'll get,

(3 - 1)/(-3 - 3) = 2/-6 = -1/3

m = - 1/3

2. You can then plug your slope, m, into the slope-intercept form of the equation. Using one of your points (doesn't matter which, but I'll use (3,1)), you can solve for b, your y-intercept.

1 = -1/3(3) + b

1 = -1 + b

b = 2

3. Plug the variables into the equation.

For your final equation, plug the slope, m, and y-intercept, b, that you just found.

y = -1/3x + 2

A technique called simple random sampling involves choosing a random group of individuals from a predetermined population.

A selection of participants from a population is chosen at random by the researcher using simple random sampling, a sort of probability sampling.

Every person in the population has the same chance of being chosen.

Then, data are gathered from as much of this randomly selected subgroup as possible.

A straightforward random sample, where each participant has an equal chance of being selected, selects a small, random portion of the entire population to represent the entire data set.

Using techniques like lotteries or random draws, researchers can generate a straightforward random sample.

Therefore, a technique called simple random sampling involves choosing a random group of individuals from a predetermined population.

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Answer:

(-4, 8)

Step-by-step explanation:

y = -1.5x + 2

y = 5x + 28

y + 1.5x = 2

y - 5x = 28

6.5x = -26

x = -4

y = 5(-4) + 28

y = -20 + 28

y = 8

Answer:

68

Step-by-step explanation:

Answer: 68

Step-by-step explanation: To find how many child tickets they sold that day, we need to set up this proportion:

[tex]\frac{4}{1}[/tex] = [tex]\frac{?}{17}[/tex]

So, now we cross multiply, so 1 x 17 = 17, and 4 x 17 = 68. I hope this helped someone!

Answer: 1

Step-by-step explanation:

Very simple both of them have the same base is 7. And we know that the number is 7x9, so the triangle is 1 because when both numbers have the same base, we will subtract the other number to get the answer!

Answer:

04c+06d=$8.50

Step-by-step explanation:

Answer:

1) No correlation

2) Weak positive correlation

3) Strong negative correlation

Answer:

Below

Step-by-step explanation:

(3y + 2l )z + (4y + 5l) p = 38y+37 l     <=======given   ( y = eyes , l = legs)

z 2l + p5l = 37 l       <===separating out the' l ' part

2z + 5p = 37

3y z + 4y p = 38y     <====== taking out the 'y' part

3z  + 4 p = 38     Solve the two underlined simultaneous equations

                  multiply first one by - 1.5   then add to second one to get:

-3z -7.5p = - 55.5   <=====  solve for p

     -3.5 p = - 17.5

           p = 5     then   z = 6

The output values from the rule are -12, 2, 0, -6 and -10

From the question, we have the following parameters that can be used in our computation:

Rule = add -6

This means that

Output = Input - 6

Using the values in the question, we have

Output = -6 - 6 = -12

Output = 8 - 6 = 2

Output = 6 - 6 = 0

Output = 0 - 6 = -6

Output = -4 - 6 = -10

The above represent the output values

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The labeling and the graph are shown in the attached image.

The equals sign is used in equations to indicate the equality of two expressions in a formula. Equations are statements in mathematics that have two algebraic expressions on either side of the equals (=) sign. It shows that the expressions printed on the left and right sides have an equal relationship.

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Answer:

8

Step-by-step explanation:

8x + 9 = 73 becauss ir is a square

8x = 64

x = 8

Answer:

Step-by-step explanation:

In square QRST, ST = 8x + 9 and QR = 73, what is x?

in the attached figure you can see that the measurement of ST and QR are the same, it is a square, therefore 4 equal sides, we can solve with an equation

8x + 9 = 73

8x = 73 - 9

8x = 64

x = 64 : 8

x = 8 units  (your answer)

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

check

8 x 8 + 9 = 73

64 + 9 = 73

73 = 73

the answer is good

Answer:

[tex]\huge{\boxed{\text{The height of the triangle is 6cm.}}}[/tex]

Step-by-step explanation:

This question requires us to use a system of equations.

The area of a triangle is (1/2) * (base) * (height).

Thus, if b = base, and h = height

[tex]\frac{1}{2} bh=36[/tex]

Additionally, from the problem, we know:

[tex]b=h+6[/tex]

Then, via substitution, we can get

[tex]\frac{1}{2} *(h+6)*h=36[/tex]

Then, simplify:

[tex]\frac{1}{2} h^2+3h=36[/tex]

[tex]\frac{1}{2} h^2+3h-36=0[/tex]

[tex](\frac{1}{2} h-3)(h+12)=0[/tex]

Thus, the height must equal either 6 or -12, and because height cannot intrinsically be negative, the height must be 6.

Hope it helps :) and let me know if you want me to elaborate.

The  number in which the value of the digit in the thousand place as  one-tenth the value of the digit in the ten-thousand place is  44,000.

In 44000, the value of each place is 1/10 the value of the place before it as you move to the right in the place value chart. As a result of moving one place to the left, the value of the digit in the number 44,000's ten thousands place is 10 times greater than that of the digit in the thousands place.

In mathematics, place value refers to a digit's location within a number. A number has a slot for each digit. The placement of each digit will be enlarged when we represent the number in general form.

These positions begin at the unit place, often known as the individual's position. Units, tens, hundreds, thousands, ten thousand, one hundred thousand, and so on are the place values of a number's digits from right to left.

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h(x) has the following formula: 9/2 cos[4/3 (x+/2)] + 1/2

Trigonometry is a discipline of mathematics that examines certain functions of angles and how to use them in computations. There are six frequent uses for an angle in trigonometry. Sine, cosine, tangent, cotangent, secant, and cosecant.

The graph is sent as

Two point (-π/2 , 5) , (π/4 , -4)

amplitude is A = 9/2

Period  = π + π/2 = 3π/2

B = 2π/3π/2 = 4/3

Phase shift = - π/2  (π/2 to left)

midpoint y= 0.5

equation of cosine will be

9/2 cos[ 4/3 (x+π/2) ] + 1/2

Therefore h(x) = 9/2 cos[ 4/3 (x+π/2) ] + 1/2

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Answer:

22

Step-by-step explanation:

Things To Keep In Mind:

(X, Y)

(12, -16) and (-10, -16) have the same Y, which means to find the distance all you have to do is subtract the Xs.

12 - -10

12 + 10

22

If there are any problems in this answer please tell me, thanks :)

Answer:

A

Step-by-step explanation:

You said fast so no explanation

Expressions that represent the total cost of the field trip is

0.8{10x + 20y}.

A mathematical expression is made up of numbers, variables, and functions (such as addition, subtraction, multiplication or division etc.)

It is possible to compare expressions and phrases. In English, a phrase by itself could contain an action, but it doesn't constitute a full sentence.

As instances of expressions and how they connect to word phrases, consider the following:

Example: 3 + 7

The phrase "the product of three and seven"

Cost of Ticket for each student cost = $10

Cost of Ticket for each Teacher cost = $20

Let the total students be x

and, total number of teacher will be y

Total cost= 10x + 20y

As museum gives 20 % rebate for promotion

So, now total cost will be {10x + 20y} - 20/100 {10x + 20y}

So the required Expression would be 0.8{10x + 20y}.

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For the given coordinates the area of the triangle will be 248.5 square units.

An equation is a statement that two expressions, which include variables and/or numbers, are equal. In essence, equations are questions, and efforts to systematically find solutions to these questions have been the driving forces behind the creation of mathematics.

It is given that,triangle TABLE has vertices M(-7,-1) A(5,6) L(2,-3)

x₁,y₁=(-7,-1)

x₂,y₂=(5,6)

x₃,y₃=(2,-3)

We must utilize the triangle's vertices to calculate the area of the triangle in order to obtain the equation,

S=1/2[-7(6-(-3)+5(-3-(-1)+2(-1-(6)]

S=248.5

Thus, for the given coordinates the area of the triangle will be 248.5 square units.

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LN = 4 units, the numerical length of \overline{LN}.

A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation. as in 3x + 5 Equals 15, for instance.

Equations come in a variety of forms, including linear, quadratic, cubic, etc.

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. We have LHS = RHS (left hand side = right hand side) in every mathematical equation.

To determine the value of an unknown variable that represents an unknown quantity, equations can be solved. The statement is not an equation if there is no "equal to" symbol in it.

According to our question-

M being on LN, then

LN equals LM plus MN, therefore

4x = 3 + x ( remove x from both sides ) ( subtract x from both sides )

3x Equals 3 ( divide both sides by 3 ) ( divide both sides by 3 )

x = 1

Then

LN = 3 + x = 3 + 1 = 4

Hence, LN = 4 units, the numerical length of \overline{LN}.

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Answer: 99 is your answer bro

Step-by-step explanation:

Answer:

27

Step-by-step explanation:

There are 27 oranges :)

Answer: 27 oranges.

Step-by-step explanation:

5 * 5 = 2020 divided by 1 = 20 If there are 5 apples with an apple: orange ratio of 4.6 there are 27 oranges.