Assume that a simple random sample has been selected and test the given claim. Use the P-value method for testing hypotheses. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. The ages of actresses when they won an acting award is summarized by the statistics n=77, x 35.9 years, and s = 11.9 years. Use a 0.05 significance level to test the claim that the mean age of actresses when they win an acting award is 33 years.
Assume that a simple random sample has been selected and test the given claim. Use the P-value method for testing hypotheses. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. The ages of actresses when they won an acting award is summarized by the statistics n=77, x 35.9 years, and s = 11.9 years. Use a 0.05 significance level to test the claim that the mean age of actresses when they win an acting award is 33 years.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:Assume that a simple random sample has been selected and test the given claim. Use the P-value method for testing hypotheses. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.
The ages of actresses when they won an acting award is summarized by the statistics \( n = 77, \bar{x} = 35.9 \) years, and \( s = 11.9 \) years. Use a 0.05 significance level to test the claim that the mean age of actresses when they win an acting award is 33 years.
**What are the hypotheses?**
- **A.** \( H_0: \mu \neq 33 \) years
\( H_1: \mu = 33 \) years
- **B.** \( H_0: \mu = 33 \) years
\( H_1: \mu \neq 33 \) years
- **C.** \( H_0: \mu = 33 \) years
\( H_1: \mu \geq 33 \) years
- **D.** \( H_0: \mu = 33 \) years
\( H_1: \mu < 33 \) years
**Identify the test statistic.**
\( t = \_\_ \) (Round to three decimal places as needed.)
**Identify the P-value.**
The P-value is \_\_. (Round to four decimal places as needed.)
**State the final conclusion that addresses the original claim. Choose the correct answer below.**
- **A.** Fail to reject \( H_0 \). There is insufficient evidence to warrant rejection of the claim that the mean age of actresses when they win an acting award is 33 years.
- **B.** Fail to reject \( H_0 \). There is sufficient evidence to warrant rejection of the claim that the mean age of actresses when they win an acting award is 33.
- **C.** Reject \( H_0 \). There is sufficient evidence to warrant rejection of the claim that the mean age of actresses when they win an acting award is 33 years.
*(Click to select your answer(s).)*

Transcribed Image Text:**Educational Website Transcript:**
A simple random sample of 56 adults is obtained from a normally distributed population, and each person's red blood cell count (in cells per microliter) is measured. The sample mean is 5.32 and the sample standard deviation is 0.51. Use a 0.05 significance level and the given calculator display to test the claim that the sample is from a population with a mean less than 5.4, which is a value often used for the upper limit of the range of normal values. What do the results suggest about the sample group?
**Test Details:**
- **T-Test**
- μ < 5.4
- t = -1.173853298
- p = 0.1227559397
- x̄ = 5.32
- Sx = 0.51
- n = 56
**Identify the P-value:**
- (Round to four decimal places as needed.)
**State the final conclusion that addresses the original claim. Choose the correct answer below:**
- **A.** Fail to reject H₀. There is not sufficient evidence to support the claim that the sample is from a population with a mean less than 5.4.
- **B.** Reject H₀. There is not sufficient evidence to support the claim that the sample is from a population with a mean less than 5.4.
- **C.** Reject H₀. There is sufficient evidence to support the claim that the sample is from a population with a mean less than 5.4.
- **D.** Fail to reject H₀. There is sufficient evidence to support the claim that the sample is from a population with a mean less than 5.4. *(Selected)*
**What do the results suggest about the sample group?**
- **A.** There is not enough evidence to conclude that the sample is from a population with a mean less than 5.4, so it is unlikely that the population has counts that are too high.
- **B.** There is enough evidence to conclude that the sample is from a population with a mean less than 5.4, so it is unlikely that the population has counts that are too high.
- **C.** There is enough evidence to conclude that the sample is from a population with a mean less than 5.4,
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