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

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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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