A paired difference experiment with n = 30 pairs yielded T+ = 354.

a. Specify the null and alternative hypotheses that should be used in conducting a hypothesis test to determine whether the probability distribution for population 1 is located to the right of that for population 2.

b. Conduct the test of part a using a = .05.

c What is the approximatep-value of the test of part b?

d. What assumptions are necessary to ensure the validity of the test you performed in part b?

Applying the Concepts