Please answer the following questions Thank you in advance f

Please answer the following questions. Thank you in advance for responding.

______ Which of the following statements is not necessarily true when applied to a test Statistic? a. It is normally distributed with a mean of 0 and a variance of 1. b. It is computed from sample data c. Its critical value(s) is/are obtained from appropriate tables of its sampling distribution d. It serves as a decision maker. ______ You perform a hypothesis test about a population mean on the basis of the following information: The sampled population is normally distributed with a variance of 100, n=25, X = 225, a = 0.05, Ha: mu > 220. The critical value of the test statistic is ________ a. 2.5 b. 1.645 c. 1.7109 d. 1.96 When testing a hypothesis, if you fail to reject Ho, which of the following is not a. The significance level for the test remains the same. b. A Type II error may have been committed. c. The p value is greater than a. d. The p value is less than a.

Solution

The following statement is not true:

d.The p value is less than alpha.

a.It is normally distributed with a mean zero and variance 1.

Since alpha=0.05, the critical value is d.1.96