For Exercises 27 and 28, perform multiple comparisons using Tukey's test at experimentwise error rate , for the data indicated. Assume the requirements are met. Do the following:
For each hypothesis test, state the hypotheses.
Use the value of from Exercises 25 or 26, and state the rejection rule.
Use from Exercises 19–24 for each hypothesis test.
For each hypothesis test, state the conclusion and the interpretation.