In each of Exercises suppose that you know that a variable is normally distributed on each of two populations. Further suppose that you want to perform a hypothesis test based on independent random...

In each of Exercises suppose that you know that a variable is normally distributed on each of two populations. Further suppose that you want to perform a hypothesis test based on independent random samples to compare the two population means. For each exercise, decide whether you would use the pooled or nonpooled t-test, and give a reason for your answer.

You know that the population standard deviations are equal.