Independent random samples of n1 = 16 and n2 = 13 observations were selected from two normal populations with equal variances:

a. Suppose you wish to detect a difference between the population means. State the null and alternative hypotheses for the test.
b. Find the rejection region for the test in part a for α = .01.
c. Find the value of the test statistic.
d. Find the approximate p-value for the test.
e. Conduct the test and state your conclusions.

Transcribed Image Text:

Population Sample Size Sample Mean Sample Variance 485.9 16 13 34.6 32.2