modeling agency, a researcher wishes to see if the average height of female models is really less than 67 inches, as the chief claims. A sample of 32 models has an average height of 66.3 inches. The standard deviation of the sample is 1.9 inches. At a = 0.05, is the average height of the models really less than 67 inches? Use the P-value hypothesis-testing method. State the hypotheses and identify the claim. 1. Ho: μ 67 (Choose the letter of the best answer) A. < B. > C. ≤ D. ≥ E. = F. ≠ 2. Ha: μ 67 (Choose the letter of the best answer) A. < B. > C. ≤ D. ≥ E. = F. ≠ 3. The claim is (Choose the letter of the best answer) A. Ho B. Ha
In a PH modeling agency, a researcher wishes to see if the average height of female models is really less than 67 inches, as the chief claims. A sample of 32 models has an average height of 66.3 inches. The standard deviation of the sample is 1.9 inches. At a = 0.05, is the average height of the models really less than 67 inches?
Use the P-value hypothesis-testing method.
State the hypotheses and identify the claim.
1. Ho: μ 67 (Choose the letter of the best answer)
A. < B. > C. ≤ D. ≥ E. = F. ≠
2. Ha: μ 67 (Choose the letter of the best answer)
A. < B. > C. ≤ D. ≥ E. = F. ≠
3. The claim is (Choose the letter of the best answer)
A. Ho B. Ha
4. Type of Test: - tailed test (Choose the letter of the best answer)
A. Right B. Left C. Two
Compute the test value.
5. Test Value = (Type the exact answer)
Find the P-value
6. P-value: (Type the exact answer)
Make the decision.
7. P a (Choose the letter of the best answer)
A. ≤ B. >
8. Decision: Ho (Choose the letter of the best answer)
A. Accept (Fail to reject) B.Reject
Summarize the results.
Conclusion: There is (9) evidence to (10) the claim that the average height of the models really less than 67 inches. (Type the exact answer)
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