Hi, can you help me answer this question please, thank you!

Hi, Can You Help Me Answer This Question Please, Thank You!

Answers

Answer 1

SOLUTION

3To calculate the test statistics, we use the following steps:

Step 1: We write out the parameters

[tex]\begin{gathered} sample\text{ mean (}\bar{\text{x}}\text{)}=0.9 \\ \text{standard deviation(s)=}0.58 \\ \operatorname{mean}(\mu)=0.8 \\ n=32 \end{gathered}[/tex]

Step 2: Write out the formula for the test statistics (t)

[tex]t=\frac{\bar{x}-\mu}{\frac{s}{\sqrt[]{n}}}[/tex]

step 3: Find t

[tex]\begin{gathered} t=\frac{0.9-0.8}{\frac{0.58}{\sqrt[]{32}}} \\ t=\frac{0.1}{0.1025} \\ t=0.97532 \\ t\approx0.98 \end{gathered}[/tex]

Hence, the test statistic is approximately 0.98 to two decimal places.


Related Questions

Transforming the graph of a quadratic, cubic, square root, or absolute value function

Answers

Explanation:

If we have a function g(x) = -f(x), then g(x) will be f(x) reflected across the x-axis.

If g(x) = f(x) - c, g(x) will be f(x) shifted c units down

If g(x) = f(x + c), g(x) will be f(x) shifted c units to the left.

In this case, the initial function is f(x) = |x| and g(x) = -|x + 3| - 2, then

g(x) = -f(x + 3) - 2

Therefore, g(x) will be the initial function reflected across the x-axis, shifted 3 units to the left and 2 units down.

Answer:

So, the graph for y = -|x + 3| - 2 will be:


Help step by step pleaseeee

Answers

The graphic below includes the graph of the provided question.

The horizontal axis is x-axis

The vertical axis is y-axis.

How do collinear points work?

Points that are situated along the same straight line but within a single line are known as collinear points. Two or more points in Euclidean geometry are said to be collinear if they are situated on a line that is either close to or far from one another.

In light of the information provided:

All the points necessary to solve the equation will be positive and negative in turn, and that point will form a straight line through the origin, indicating that all the points are collinear.

You can change the value to fit your graph in the diagram that corresponds to the graph for the question that is attached below.

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What are the X and Y intercepts for the graph shown in the picture?

Answers

Based on the given figure, you can conclude:

x-intercepts:

x = 0

x = number in between 100 and 125, approximately 105

x = number greater than 175, approximately 180

y-intercepts:

y = 0

For the second and third x-intercepts there is no possible to specifiy the exact numbers due to the scale units of the graph.

name a number that is not a whole number

Answers

Whole numbers are the numbers 0, 1, 2, 3, 4, etc. (the natural numbers and zero). Negative numbers are not considered whole numbers. All natural numbers are whole numbers, but not all whole numbers are natural numbers since zero is a whole number but not a natural number.

For example.

- 2, - 10

So what's in the photo is what I need help with.

Answers

Answer:

1 == B No Solutions

2 == A One Solution

3 == C Infinitely Many Solutions

Explanation:

We first find go through each system and see which has one solution, no solutions, and infinitely many solutions.

1.

x

For each graph below, state whether it represents a function.

Answers

Graph 1: No, because it fails the vertical line test.

Graph 2: No, because it fails the vertical line test.

Graph 3: Yes, because it passes the vertical line test.

Graph 4: Yes, because it passes the vertical line test.

Graph 5: No, because it fails the vertical line test.

Graph 6: Yes, because it passes the vertical line test.

help it’ll be greatly appreciated :(

Answers

In population 1:

Pattern is changing by 13.5 to 11.5 to 8.3

Which is 2 then 3.2.

In population 2:

Population is decreasing by 2.

Describe pattern.

A recurring arrangement of numbers, forms, colors, and other elements constitutes a pattern in mathematics. The Pattern can be connected to any kind of occasion or thing. When a group of numbers are arranged in a particular way, the arrangement is referred to as a pattern. Patterns can also occasionally be referred to as a series.

Given.

Pattern in which population is changing are:

In population 1:

It is changing by 13.5 to 11.5 to 8.3

Which is 2 then 3.2.

In population 2:

Population is decreasing by 2.

Completing the table:

Population 1            Population 2

      42.8                             29

      38.6                              27

     33.4                              25

      27.2                              23

Graph is mentioned below.

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Which expression can be used to determine the number of downloads on the meh day after the game was available

Answers

we have the sequence

1,790 2,555 3,320 4,085 4,850

so

a1=1,790 ----> first term

a2=2,555

a3=3,320

a4=4,085

a5=4,850

Find out the difference between consecutive terms

a2-a1=2,555-1,790=765

a3-a2=3,320-2,555=765

a4-a3=4,085-3,320=765

a5-a4=4,850-4,085=765

This is an arithmetic sequence

The common difference is d=765

so

[tex]a_n=a_1+d\left(n-1\right)[/tex]

we have

d=765

a1=1,790

substitute

[tex]\begin{gathered} a_n=1,790+765(n-1) \\ a_n=1,790+765n-765 \\ a_n=1,025+765n \end{gathered}[/tex]The answer is option B

Suppose a triangle has sides a, b, and c, and that a² + b² < c². Let 9 be the
measure of the angle opposite the side of length c. Which of the following
must be true? Check all that apply.
A. The triangle is not a right triangle.
B. cose < 0
C. cose > 0
□ D. a² + b²-c² = 2abcose
SUBMIT

Answers

Using trigonometry we know that option (B) "cosθ < 0" is correct.

What is Trigonometry?The study of correlations between triangles' side lengths and angles is known as trigonometry. The field was created in the Hellenistic era in the third century BC as a result of the use of geometry in astronomical research.

For a right-angle triangle, the sum of the square of the legs is equal to the hypotenuse side(longest side).

Therefore, for a right triangle

a² + b² = c²

For the triangle that has a² + b² > c², it shows it is not a right triangle.

Let θ be the measure of the angle opposite the side of length c.We have to find the statements which are must be true.

Cosine law:

c² = a² + b² - 2abcosθ

Substitute the value then we get:

c² < c² - 2abcosθ

Subtracting c² on both sides of the inequality:

c² - c² < c²- c² - 2abcosθ0 <  -2abcosθ

Adding 2abcosθ on both sides then we get:

2abcosθ < -2abcosθ + 2abcosθ = 02abcosθ < 0cosθ < 0

cosθ is negative in the second quadrant and third quadrants.

Therefore, using trigonometry we know that option (B) "cosθ < 0" is correct.

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Can somebody please help me right now??? i’m stuck and i need help with this bad

Answers

Answer:

Is wolfgang Mozart's

Step-by-step explanation:

The central traits of the Classical style are all present in Mozart's music. Clarity, balance, and transparency are the hallmarks of his work, but simplistic notions of its delicacy mask the exceptional power of his finest masterpieces, such as the Piano Concerto No. 24 in C minor, K.

The students in Cassie's class got to choose between pizza and burgers for the celebration on the last day of school. 8 students picked the pizza. If there are 10 students in all in Cassie's class, what percentage of the students picked the pizza? Write your answer using a percent sign (%).

Answers

8/10 is 0.80
0.80 x 100= 80
Answers is 80%

Write the conditional
statement in if-then form.
The vertices of a triangle
are not colinear.

Answers

The conditional statement for "The vertices of a triangle are not collinear" is "if the points are not collinear then they are vertices of triangle."

What is conditional statement?

Conditionals are commands used in programming languages to handle choices. Particularly, conditionals carry out various calculations or actions based on whether a boolean condition defined by the programmer evaluates to true or false.

What is if-then?

The hypothesis is a prediction of what will transpire in your experiment. The words "IF" and "THEN" are frequently used when writing the hypothesis. For instance, "I will fail the test if I don't study." Your independent and dependent variables are reflected in the "if" and "then" statements.

"The vertices of a triangle are not collinear" has a conditional statement that reads, "If the points are not collinear, then they are vertices of the triangle."

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A survey showed that of college students read internet news on a regular basis and that of college students regularly watch the news on TV. The survey also showed that of college students both follow TV news regularly and read internet news regularly.
(a)What is the probability that a student watches TV news regularly, given that he or she regularly reads internet news? Round your answer to the nearest hundredth.
(b)What is the probability that a randomly selected college student reads internet news regularly, given that he or she watches TV news regularly? Round your answer to the nearest hundredth.

Answers

For the given values, the probability that a student watches TV news regularly is 0.833, the probability that a randomly selected college student reads internet news regularly is 0.240.

According to a survey, 83% of college students routinely watch the news on television, while 24% of college students read newspapers on a regular basis.

Additionally, the survey revealed that 20% of college students routinely read newspapers and watch TV news.

(A) Given that a student reads newspapers frequently,

The answer is [P(TV and newspapers)/P] where P(watches TV|reads newspapers) (newspapers)

= 0.20/0.24 = 0.833

(b) Given that a randomly chosen college student watches TV news frequently

The answer is that P(newspapers | watches TV) = [P(newspapers and TV)] / P. (TV)

= 0.20/0.83 = 0.240

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a bond issue outstanding that matures in 19 years. The bonds pay interest semiannually. The bonds have a face value of $1,000 and are currently priced at $995.28. The bonds carry a coupon rate of 3.5 percent. What is the aftertax cost of debt if the total tax rate is 22 percent? Multiple Choice

Answers

The after tax cost of debt for the bond is 2.73%

Given,

The face value of the bond, FV = $1000

Present value of the bond, PV = $995.28

Maturity period = 19 years

Coupon rate = 3.5%

Total tax rate = 22%

We have to find the after tax cost of debt for the bond.

The bond pays interest semiannually ;

so coupon rate = 3.5/2 = 1.75

Coupon payment , pmt= 0.0175 x 1000 = $17.5

Maturity, nper = 19 years x 2 = 38

Compute yield rate using spreadsheet = Rate(nper,pmt,-PV, FV)

Then,

= RATE(38, 17.5, -995.28, 1000)

Rate or yield is computed as 3.5%

The present value is negative as it is a cash outflow.

The cost of debt is 3.5%

The tax rate is 22%

After tax cost of debt = 3.5 (1 - 0.22)  = 2.73%

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Using synthetic division what is the first row for the dividend (divided) and the divisor value using synthetic division process:

2x3−10x+2/x−4

Answers

Using synthetic division, the solution to the polynomial fraction expression is; 2x² - 10 + 12/(x - 4)

How to use Synthetic Division?

We are given the polynomial fraction as;

(2x³ - 10x + 2)/(x- 4)

This means that we want to divide the polynomial (2x³ - 10x + 2) by (x - 4) using synthetic division.

For the divisor, we have x - 4, and that means x - 4 = 0, x = 4

So, we'll be using 4 for the synthetic division and we have;

-1  |   2     0    -10   2

     ×       0     0    10        

   -------------------------

     2      0    -10   12

Now we will form the expression in the form of fraction again;

2x² - 10 + (12/(x - 4))

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If y = 2x2 – 4, what is its inverse?

Answers

The inverse of the function y = 2 · x² - 4 is equal to y⁻¹ = √[(x + 4) / 2], such that x ≥ - 4. (Correct choice: B)

How to find the inverse of a function

In this problem we have a quadratic function, whose inverse has to be found. First, we make the following substitution on the function:

y = x

x = y⁻¹

Now we proceed to clear y⁻¹ by using algebra properties:

x = 2 · (y⁻¹)² - 4

x + 4 = 2 · (y⁻¹)²

(x + 4) / 2 = (y⁻¹)²

√[(x + 4) / 2] = y⁻¹

y⁻¹ = √[(x + 4) / 2], such that x ≥ - 4

The inverse of the function is equal to y⁻¹ = √[(x + 4) / 2], such that x ≥ - 4.

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Use the above data to calculate the correlation coefficient Answer Choices.0.890.94-0.89-0.94

Answers

Using the table, we have the following points:

(x1, y1) ==> (2.5, 3), (3.5, 4.5), (5, 4.8), (5.5, 5.2), (6, 5.5)

Let's find the correlation coefficient.

To find the correlation coefficient, apply the formula:

[tex]r=\frac{n\Sigma xy-\Sigma x\Sigma y}{\sqrt{(n\Sigma x^2-\Sigma(x)^2)(n}\Sigma y^2-\Sigma(y)^2)}[/tex]

Where:

n = 5

Σx = 2.5 + 3.5 + 5 + 5.5 + 6 = 22.5

Σy = 3 + 4.5 + 4.8 + 5.2 + 5.5 = 23

Σxy = 2.5⋅3 + 3.5⋅4.5 + 5⋅4.8 + 5.5⋅5.2 + 6⋅5.5 = 108.85

Σx² = 2.5² + 3.5² + 5² + 5.5² + 6² = 109.75

Σy² = 109.6

Plug in values in the formula and solve for r.

We have:

[tex]\begin{gathered} r=\frac{5(108.85)-(22.5)(23)}{\sqrt{(5(109.75)-22.5^2)(5(109.6)-(23)^2}} \\ \\ r=0.94 \end{gathered}[/tex]

Therefore, the coefficient is 0.94

ANSWER:

0.94

A rectangular driveway is 9 feet wide, and it has an area of 135 square feet. How lo g is the driveway

Answers

Area of a Rectangle

Given a rectangle of length L and width W, the area is calculated as follows:

A = L.W

We are given the area of A=135 square feet and the width is W= 9 ft. Solving for L:

[tex]L=\frac{A}{W}=\frac{135ft^2}{9ft}=15ft[/tex]

The driveway is 15 feet long

In december 2004 35% of student in the high school were satisfied with the lunches supplies through the school of the 856 survey, 265 inducted they were satisfied does this suggests the proportion of student satisfied with the quality of lunches has decreased
What does it means to make a type 2 error for the test

Answers

When one fails to reject a null hypothesis that is actually wrong, this error is known statistically as a type II error. This term is used in the context of hypothesis testing.

A type II error, often called an error of omission, results in a false negative. When the patient is infected, a disease test, for instance, can return a negative result. This is a type II error because, despite being wrong, we accept the test's negative conclusion.

The difference between a type I and type II error is that a type I error refers to the failure to reject a valid null hypothesis, whereas a type II error refers to the failure to do so. Despite the fact that the error does not happen by accident, it rejects the alternative theory.

The likelihood of mistakenly failing to reject the null hypothesis when it does not apply to the entire population is known as a type II error.

In essence, a type II error is a false negative.

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ng waffles for breakfast. The recipe calls for 1/2 cups of water for every 2Jemina pancake mix. How many cups water would he need for only oneake mix? Show your work

Answers

Ratio:

cups of water / pancake mix = (1/2) / 2

For 1 pancake mix, x cups of water:

x / 1 = (1/2) / 2

Solve for x, cross multiply:

2x = ( 1/2) 1

2x = 1/2

Divide both sides by 2

2x/2 = (1/2) / 2

x = 1/4

Answer:

She would need 1/4 cups of water

What subset of real numbers does 1/2 belongs to?

Answers

Answer:

It belongs to the sets of natural numbers, {1, 2, 3, 4, 5, …}.

It is a whole number because the set of whole numbers includes the natural numbers plus zero. It is an integer since it is both a natural and whole number.

Answer:  rational numbers if thats an answer

Step-by-step explanation:

What do the 2 points on the graph mean in terms of the situation

Answers

Coordinates - A pair of integers that show the location of a point on a graph. The first number represents the x-axis, while the second represents the y-axis.

Other names for this type of pair are ordered pair and numbered pair. A proportionate connection is one in which the values are all connected by the same constant value. A proportionate connection is also known as a linear relationship in mathematics.

Assume f(x) and g(x) are two functions that accept a real number as input and return a real number as output.

The intersection points of f(x) and g(x) are then those x values for which f(x)=g(x).

The precise numbers can sometimes be discovered by algebraically solving the equation f(x)=g(x).

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Which words describe the polynomial? (Select all that apply) * (1 Point)
f (x) = x^4 - 2
quartic
trinomial
cubic
quadratic
binomial

Answers

A quartic function is a quartic polynomial, which is an integer-coefficients polynomial with a four-degree maximum.

What is meant by Quartic polynomial?

A quartic function is a quartic polynomial, which is an integer-coefficients polynomial with a four-degree maximum.

Quartic in mathematics refers to something that is of the "fourth order," such as a function. One of the following is possible: Quartic function, a fourth-degree polynomial function. Quartic polynomial, a polynomial equation of degree 4, where an is a nonzero polynomial that defines the quartic equation.

A quartic equation, also known as an equation of the fourth degree, is an equation of the form that reduces a quartic polynomial to zero. A quartic function's derivative is a cubic function.

Therefore, the correct answer is option a) quartic.

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Solve the inequality and graph the solution on the line provided. 9 + 3x ≥ -6

Answers

9 + 3x ≥ -6​

9 is adding on the left, then it will subtract on the right

3x ≥ -6​ - 9

3x ≥ -15

3 is multiplying on the left, then it will divide on the right

x ≥ -15/3

x ≥ -5

I need help solving an answering this practice problems from my pre-calculus prep guide

Answers

The general formula of a geometric sequence is:

[tex]a_n=a_1(r)^{n-1}[/tex]

where,

n = 6

a₁ = -8100

r = -0.1

Replacing on the formula:

[tex]\begin{gathered} a_6\text{ = -8100}\times(-0.1)^{6-1} \\ a_6\text{ = 0.081} \end{gathered}[/tex]

The length of a rectangle is given by the function l(x)=2x+1, and the width of the rectangle is given by the function w(x)=x+4.Which function defines the area of the rectangle?Hint: A=l⋅w

Answers

The area of a rectangle is calculated using the formula:

[tex]A=l\times w[/tex]

where l is the length and w is the width.

The functions for the length and width are given to be:

[tex]\begin{gathered} l(x)=2x+1 \\ w(x)=x+4 \end{gathered}[/tex]

Therefore, the area of the rectangle will be:

[tex]A=(2x+1)(x+4)[/tex]

We can apply the FOIL Method:

[tex](a+b)(c+d)=ac+ad+bc+bd[/tex]

Therefore, we have:

[tex]\begin{gathered} \left(2x+1\right)\left(x+4\right)=2x\cdot x+2x\cdot\:4+1\cdot\:x+1\cdot\:4 \\ =2x^2+8x+x+4 \end{gathered}[/tex]

Simplifying, the area is:

[tex]a(x)=2x^2+9x+4[/tex]

The SECOND OPTION is correct.

21. Complete the following transactions and explain how they would appear in your register.
(5 points each - 2 points for the correct answers and 3 points for a correct explanation of your
process)
• You open your bank account on April 16 with a tax refund check of $145.00.
You pay Sell Phone $65.34 on April 18. (Check 794)
• You deposit your paycheck on April 23. ($9.76 hour for 35 hours)
• You buy $61.32 (4% sales tax not included) in clothes from BargainsRUs on April 24
using your debit card.
Be sure to include in your response:
.
• the steps you followed to complete your computations
the balance as of April 24
• the process for entering the transaction in the registry
(5 points)

Answers

After all the transaction, money left in the bank account is $15.8872.

Given that, you open your bank account on April 16 with a tax refund check of $145.00. You pay Sell Phone $65.34 on April 18.

What is a tax refund check?

A tax refund is a reimbursement to a taxpayer for any excess amount paid to the federal government or a state government.

On  April 16th balance in the account = $145.00 cost of phone = $65.34 on April 18.

Balance on April 18 = 145.00-65.34

= $79.66

Deposited check $9.76 on 23rd April for 35 hours

Balance on 23rd April = 79.66+9.76

=$89.42

Since, the check deposited only for 35 hours, again balance on 24th April will be $79.66

On 24th April you brought clothes from BargainsRUs for

61.32+4% of 61.32

= 61.32+2.4528

= $63.7728

So, the remaining balance in the account = 79.66-63.7728

=$15.8872

Therefore, after all the transaction, money left in the bank account is $15.8872.

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Serum albumin levels in adults are distributed approximately Normally with a mean of 35 g/l and a standard deviation of 5 g/l. What is the probability that a randomly selected adult has a serum albumin level greater than 32.5 g/l? (Enter your answer rounded to two decimal places.)

Answers

There is a 0.6915 = 69.15% probability that a randomly selected adult has a serum albumin level greater than 32.5 g/l.

Normal Probability Distribution

The z-score of a measure X of a normally distributed variable that has mean represented by [tex]\mu[/tex] and standard deviation represented by [tex]\sigma[/tex] is given by the rule presented below:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The z-score measures how many standard deviations the measure X is above or below the mean, depending if the z-score is positive or negative.From the z-score table, the p-value associated with the z-score is found, and it represents the percentile of the measure X.

The mean and the standard deviation of the albumin levels are given as follows:

[tex]\mu = 35, \sigma = 5[/tex]

The probability that a randomly selected adult has a serum albumin level greater than 32.5 g/l is one subtracted by the p-value of Z when X = 32.5, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

Z = (32.5 - 35)/5

Z = -0.5

Z = -0.5 has a p-value of 0.3085.

1 - 0.3085 = 0.6915 = 69.15% probability.

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Noah operates an orange juice stand. On Monday he used 3 3/10 bags of oranges. On Tuesday he used 1/6 as many oranges as on Monday. How many bags of oranges did Noah use on Tuesday?

Write your answer as a fraction or as a whole or mixed number.

Answers

The number of bags of oranges Noah used on Tuesday as required to be determined in the task content is; 11/20 bags of oranges.

What is the number of bags of oranges used by Noah on Tuesday?

It follows from the task content that Noah used 3 3/10 bags of oranges on Monday.

Hence, by expressing the mixed number, 3 3/10 as a fraction; we have; 33/10.

Therefore, since he uses 1/6 as many oranges as on Monday on Tuesday;

The number of bags of oranges used on Tuesday is; (1/6) × 33/10

= 33/60

= 11/20.

Therefore, the number of bags of oranges Noah uses on Tuesday is; 11/20.

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what is a root of a parabola?

Answers

The roots of a prabola is where the function intersects the x-axis.

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During a physics lab, students added weights of different masses to aspring. After adding each weight to the spring, they measured how far theweight was from the lab tabletop, in centimeters. Then they graphed thedata and calculated the line of best fit to be y = -1 x + 10.25Weight Distance fromthe Tabletop (cm)108642Effect of Weightson a Spring0 50 100 150 200 250 300Mass (g)What does the x-intercept represent?-XAt 250 grams, the weight will touch thetabletop.With no weight, the spring is 10centimeters above the tabletop.The weight will be 250 centimetersabove the tabletop when the spring hasa mass of 10 grams on it.The spring stretches and the weight is 1centimeter closer to the tabletop forevery 25 grams added to it. PLEASE HELPquestion attached below could someone please help me get the answer to my question? Write Expression to represent the total area as the sum of the areas of each room ANSWERS ASAP PLEASEEEEE Graph the line 3x + 6y =12.Use the line tool and select two points on the line. joe smith resides in newton, ma and he is a successful independent insurance agent. recently, one of the life insurance companies with whom he places business offered him a special financial arrangement. if joe meets sales targets, he will receive large bonuse and will go on a trip to italy. joe will also be able to recruit and train sub-agents and receive an over-riding commission based on the amount of life insurance the sub-agents sell. based on this description, joe smith is a(n) Do you think that driverless cars are the future of transportation? Why or why not? when william goes on vacation to germany, he sees older children having a small glass of wine with their parents while at dinner. william, being from the united states, believes this is wrong. this is an example of: group of answer choices Describe the construction of a lead acid battery cell Which of the following macromolecules contain the element carbon hydrogen oxygen and nitrogen in their structure? A: carbohydrates & nucleic acids B: nucleic acids & lipids C:proteins & nucleic acids D: proteins & carbohydrates whats 2+2 i cant figure it out I need help Please!!! (2x^2+3x+8) (x^2-x-4) multiply the polynomials and simplify the answer how to find the greatest number of students to whom 135pens 225 books and 315 copies can be divided equally also find the shares of each item . maths What is 78,600 rounded to the nearest thousand When analyzing the content of a speech, a person should ask if the speech:O is logically organized and easy to follow.Ohas been completely memorized.was delivered loudly enough for everyone to hear it. f(x)=7x-3 for f(x)= -38 write a response either agreeing or disagreeing on weather christopher columbus was a hero or villan. 3. Complete a table like the one below to show the pros and cons of the two mainenvironmentalist points of view.PreservationConservationaturalPROSCONS