^ Question 5 (6 points) Which of the following statements are true? It is custom

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^ Question 5 (6 points) Which of the following statements are true? It is customary to call the data significant when Ho is rejected. It is customary to call the data not significant when Ho is not rejected. The calculation of the P-value depends on whether the test is upper-tailed, lower-tailed or two-tailed. The P-value for a z test (one based on a test statistic whose distribution when Ho is true is ,at least approximately standard normal) is easily determined from the information in the standard normal probability table All of the above are true statements

Explanation / Answer

All of the statements is true.

1. Is true. This is rejection of Ho when the data is significant

2. Is true. This is non-rejection of Ho when when data is insignificant

3. Is true. The one-tailed differs from 2 tails in that the p-value is distributed differently. In 2 tailed test it is distributed into 2 tails, in one tail it is distributed into one tail only.

4. Yes, normal probability table is used to p-value for a Ztest

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