Problem 1.71 The following data comes from an experiment that measures the weight loss for a group of 30 men who have been randomly assigned to three different weight loss programs labeled A, B, C, respectively. AB C ABC 15.3 3.4 11.9 10 5.2 8.8 2.1 10.9 13.1 8.3 2.5 12.5 8.8 2.8 11.6 9.4 10.5 8.6 5.1 7.8 6.8 12.5 7.1 17.5 8.3 0.9 6.8 11.1 7.5 10.3

(a) As a first step toward comparing the three diets, compute the means and standard deviations of the weight losses for each of the three diets.

(b) Compute the side-by-side box plots of the weight losses for each of the three diets. Are there any outliers?

(c) Using the results of parts

(a) and

(b) comment on the similarities and differences between the weight loss data for each of the diets. Which diet is most effective? least effective?