For Exercises 8 through 19, assume that all variables are normally distributed, that the

Chapter 12, Problem 12

(choose chapter or problem)

For Exercises 8 through 19, assume that all variables are normally distributed, that the samples are independent, and that the population variances are equal. Also, for each exercise, perform the following steps. a. State the hypotheses and identify the claim. b. Find the critical value. c. Compute the test value. d. Make the decision. e. Summarize the results, and explain where the differences in the means are. Use the traditional method of hypothesis testing unless otherwise specified.Weight Gain of Athletes A researcher wishes to see whether there is any difference in the weight gains of athletes following one of three special diets. Athletes are randomly assigned to three groups and placed on the diet for 6 weeks. The weight gains (in pounds) are shown here. At a 0.05, can the researcher conclude that there is a difference in the diets? Diet A Diet B Diet C 3 10 8 6 12 3 7 11 2 4 14 5 8 6 A computer printout for this problem is shown. Use the P-value method and the information in this printout to test the claim. (The information in this exercise will be used in Exercise 4 of Section 122.)