Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women who are 20 years of age or older today results in a mean height of 64.1 inches (a) State the appropriate null and alternative hypotheses to assess whether women are taller today. (b) Suppose the P-value for this test is 0.11. Explain what this value represents. (c) Write a conclusion for this hypothesis test assuming an a= 0.05 level of significance. (a) State the appropriate null and alternative hypotheses to assess whether women are taller today. OA. H=64.1 in versus H, µ/64.1 in. OC. Ho H=63.7 in versus H, p<63.7 in. OE. Ho p=63.7 in versus H, p> 63.7 in. CITT OB. Ho u 63.7 in versus H, #63.7 in OD. Ho H=64.1 in versus H, p<64.1 in. OF. Hou 64.1 in versus H, µ> 64.1 in.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
### Hypothesis Testing on Women's Height

**Scenario:**
Several years ago, the mean height of women aged 20 years or older was 63.7 inches. A recent random sample of 45 women aged 20 or older shows a mean height of 64.1 inches. 

### Questions and Explanation:

**(a) State the appropriate null and alternative hypotheses to assess whether women are taller today.**

Choose from the following options:

- **A.** \( H_0: \mu = 64.1 \text{ in.} \) versus \( H_1: \mu \neq 64.1 \text{ in.} \)
- **B.** \( H_0: \mu = 63.7 \text{ in.} \) versus \( H_1: \mu \neq 63.7 \text{ in.} \)
- **C.** \( H_0: \mu = 63.7 \text{ in.} \) versus \( H_1: \mu < 63.7 \text{ in.} \)
- **D.** \( H_0: \mu = 64.1 \text{ in.} \) versus \( H_1: \mu < 64.1 \text{ in.} \)
- **E.** \( H_0: \mu = 63.7 \text{ in.} \) versus \( H_1: \mu > 63.7 \text{ in.} \)
- **F.** \( H_0: \mu = 64.1 \text{ in.} \) versus \( H_1: \mu > 64.1 \text{ in.} \)

**(b) Suppose the P-value for this test is 0.11. Explain what this value represents.**

The P-value of 0.11 indicates that, assuming the null hypothesis \( H_0 \) is true, there is an 11% probability of obtaining a sample mean of 64.1 inches or more extreme by random chance.

**(c) Write a conclusion for this hypothesis test assuming an \( \alpha = 0.05 \) level of significance.**

Since the P-value of 0.11 is greater than the significance level \( \alpha \) of 0.05, we do not reject the
Transcribed Image Text:### Hypothesis Testing on Women's Height **Scenario:** Several years ago, the mean height of women aged 20 years or older was 63.7 inches. A recent random sample of 45 women aged 20 or older shows a mean height of 64.1 inches. ### Questions and Explanation: **(a) State the appropriate null and alternative hypotheses to assess whether women are taller today.** Choose from the following options: - **A.** \( H_0: \mu = 64.1 \text{ in.} \) versus \( H_1: \mu \neq 64.1 \text{ in.} \) - **B.** \( H_0: \mu = 63.7 \text{ in.} \) versus \( H_1: \mu \neq 63.7 \text{ in.} \) - **C.** \( H_0: \mu = 63.7 \text{ in.} \) versus \( H_1: \mu < 63.7 \text{ in.} \) - **D.** \( H_0: \mu = 64.1 \text{ in.} \) versus \( H_1: \mu < 64.1 \text{ in.} \) - **E.** \( H_0: \mu = 63.7 \text{ in.} \) versus \( H_1: \mu > 63.7 \text{ in.} \) - **F.** \( H_0: \mu = 64.1 \text{ in.} \) versus \( H_1: \mu > 64.1 \text{ in.} \) **(b) Suppose the P-value for this test is 0.11. Explain what this value represents.** The P-value of 0.11 indicates that, assuming the null hypothesis \( H_0 \) is true, there is an 11% probability of obtaining a sample mean of 64.1 inches or more extreme by random chance. **(c) Write a conclusion for this hypothesis test assuming an \( \alpha = 0.05 \) level of significance.** Since the P-value of 0.11 is greater than the significance level \( \alpha \) of 0.05, we do not reject the
Expert Solution
Step 1: Providing given information

Population mean mu equals 63.7

sample size n= 45

sample mean = 64.1







steps

Step by step

Solved in 5 steps with 6 images

Blurred answer
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question
Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women who are 20 years of age or older today results in a mean height of 64.1 inches.

(a) State the appropriate null and alternative hypotheses to assess whether women are taller today.
(b) Suppose the P-value for this test is 0.11. Explain what this value represents.
(c) Write a conclusion for this hypothesis test assuming an α = 0.05 level of significance.

(a) State the appropriate null and alternative hypotheses to assess whether women are taller today.

- A. \( H_0: \mu = 64.1 \text{ in. versus } H_1: \mu \neq 64.1 \text{ in.} \)
- B. \( H_0: \mu = 63.7 \text{ in. versus } H_1: \mu \neq 63.7 \text{ in.} \)
- C. \( H_0: \mu = 63.7 \text{ in. versus } H_1: \mu < 63.7 \text{ in.} \)
- D. \( H_0: \mu = 64.1 \text{ in. versus } H_1: \mu < 64.1 \text{ in.} \)
- E. \( H_0: \mu = 63.7 \text{ in. versus } H_1: \mu > 63.7 \text{ in.} \) ✓
- F. \( H_0: \mu = 64.1 \text{ in. versus } H_1: \mu > 64.1 \text{ in.} \)

(b) Suppose the P-value for this test is 0.11. Explain what this value represents.

- A. There is a 0.11 probability of obtaining a sample mean height of exactly 64.1 inches from a population whose mean height is 63.7 inches.
- B. There is a 0.11 probability of obtaining a sample mean height of 64.1 inches or taller from a population whose mean height is 63.7 inches.
- C. There is a 0.11 probability of obtaining a sample mean height of 64.1 inches or
Transcribed Image Text:Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women who are 20 years of age or older today results in a mean height of 64.1 inches. (a) State the appropriate null and alternative hypotheses to assess whether women are taller today. (b) Suppose the P-value for this test is 0.11. Explain what this value represents. (c) Write a conclusion for this hypothesis test assuming an α = 0.05 level of significance. (a) State the appropriate null and alternative hypotheses to assess whether women are taller today. - A. \( H_0: \mu = 64.1 \text{ in. versus } H_1: \mu \neq 64.1 \text{ in.} \) - B. \( H_0: \mu = 63.7 \text{ in. versus } H_1: \mu \neq 63.7 \text{ in.} \) - C. \( H_0: \mu = 63.7 \text{ in. versus } H_1: \mu < 63.7 \text{ in.} \) - D. \( H_0: \mu = 64.1 \text{ in. versus } H_1: \mu < 64.1 \text{ in.} \) - E. \( H_0: \mu = 63.7 \text{ in. versus } H_1: \mu > 63.7 \text{ in.} \) ✓ - F. \( H_0: \mu = 64.1 \text{ in. versus } H_1: \mu > 64.1 \text{ in.} \) (b) Suppose the P-value for this test is 0.11. Explain what this value represents. - A. There is a 0.11 probability of obtaining a sample mean height of exactly 64.1 inches from a population whose mean height is 63.7 inches. - B. There is a 0.11 probability of obtaining a sample mean height of 64.1 inches or taller from a population whose mean height is 63.7 inches. - C. There is a 0.11 probability of obtaining a sample mean height of 64.1 inches or
Solution
Bartleby Expert
SEE SOLUTION
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman