Answer to Question #254198 in Statistics and Probability for Millicent

Question

If you want to carry out a statistical test at α = 0.01. to test whether the population mean is equal to 500 or not, using a sample size of 300, with a test statistic of z = 1.97, your conclusion should be_____.

Select one:

a. do not reject the null hypothesis

b. reject the null hypothesis

c. only reject when the test statistic is negative

d. not enough information to determine

Answer 1

Since the test statistic z=1.97 is less then the critical value z*=2.33, fail to reject the null hypothesis.

a. do not reject the null hypothesis