Question

Asked Nov 24, 2019

2 views

Step 1

a.

The null and alternative hypothesis is obtained below:

**Hypotheses:**

*Null hypothesis:*

*H*_{0}: *µ* ≤ 40,500

*Alternative hypothesis:*

*H*_{1}: *µ* > 40,500

Since the alternative hypothesis states µ > 40,500, this test is a right-tailed test.

b.

The sample size (*n*) is 18

Degrees of freedom

Df = *n *– 1

= 18 –1

= 17

Step-by-step procedure to obtain the critical value using MINITAB software:

- Choose
**Graph > Probability Distribution Plot**choose**View Probability****> OK.** - From
**Distribution**, choose ‘’ distribution.*t* - In
**Degrees of freedom**, enter 17. - Click the
**Shaded Area** - Choose
and*P*Value**Right Tail**for the region of the curve to shade. - Enter the
**data value**as 0.05. - Click
**OK**.

Output obtained using MINITAB software is given below:

Step 2

Here, the sample mean, *x*-bar is 51,500.

Population mean, *µ* is 40,500.

Sample standard deviation, *s* = 10,200

Sample size, *n* is 18.

The test statistic for *t*-test is calculated as **4.58** from the calculations given below.

Step 3

*d.*

* **Computation of P-value:*

The right tailed *P*-value for the *t*-test is 0.000 which can be obtained using the excel formula,** &ld...**

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: A study using two random samples found that the mean amount of time spent per week on leisure activi...

A: Click to see the answer

Q: Use the given statistics to complete parts (a) and (b). Assume that the populations are normally d...

A: The provided information are:

Q: Question 4 in images

A: 4.Step-by-step procedure to obtain the confidence interval using MINITAB software:Choose Stat > B...

Q: a study was conducted to test the effect of self-imagery on social anxiety. participants in the stud...

A: According to the provided question, a study was conducted to test the effect of self-imaginary on so...

Q: I need help with question 8. here is what I have said thus far, the instructions say, (8)"Be sure to...

A: As per the questionAssuming the Given data is correctInterpretation from the 95% confidence interval...

Q: 1. Suppose you are interested in the effect of class attendance on college performance, and plan to ...

A: According to the provided information, the lazier students tend to have a lower attendance rate. So,...

Q: the concentration of heaxane 0a common solvent) was measured in units of micrograms per liter for a ...

A: The provided information are:

Q: You are interested in finding a 99% confidence interval for the mean number of visits for physical t...

A: Given Data

Q: Many states and Canadian provinces have government-sponsored lotteries. Here is a simple lottery fro...

A: The possible three digit numbers varies from 000 to 999 making a total of 1000 numbers.Consider X be...