15. Which of the following statements are true about a Z test? O F. A, B C, and D are correct. C. If the P value from the test exceeds 5%, we fail to reject the null hypothesis. A. The test determines statistical significance. B. The two tailed P value is obtained by calculating a sample Z score by the formula, Z score = (point estimate - null value) / (standard error of point estimate), and looking up the corresponding probability of randomly obtaining an equal or greater absolute value of Z in a table of the standard normal distribution. E. Only A, B and C are correct. D. If the absolute value of the Z score exceeds 1.96, then the P Value is greater than 5%.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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15. Which of the following statements are true about a Z test?

- ○ F. A, B, C, and D are correct.

- ○ C. If the P value from the test exceeds 5%, we fail to reject the null hypothesis.

- ○ A. The test determines statistical significance.

- ○ B. The two tailed P value is obtained by calculating a sample Z score by the formula, Z score = (point estimate – null value) / (standard error of point estimate), and looking up the corresponding probability of randomly obtaining an equal or greater absolute value of Z in a table of the standard normal distribution.

- ○ E. Only A, B and C are correct.

- ○ D. If the absolute value of the Z score exceeds 1.96, then the P Value is greater than 5%.
Transcribed Image Text:15. Which of the following statements are true about a Z test? - ○ F. A, B, C, and D are correct. - ○ C. If the P value from the test exceeds 5%, we fail to reject the null hypothesis. - ○ A. The test determines statistical significance. - ○ B. The two tailed P value is obtained by calculating a sample Z score by the formula, Z score = (point estimate – null value) / (standard error of point estimate), and looking up the corresponding probability of randomly obtaining an equal or greater absolute value of Z in a table of the standard normal distribution. - ○ E. Only A, B and C are correct. - ○ D. If the absolute value of the Z score exceeds 1.96, then the P Value is greater than 5%.
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