(02.04 MC)  Thirty overweight males agree to participate in…

(02.04 MC)  Thirty overweight males agree to participate in a study of the effectiveness of three weight-loss treatments: X, Y, and Z. The researcher calculates the body fat composition of each subject. The response variable is the reduction in body fat after six weeks of treatment. Previous studies have shown the effects of a diet may vary based on a subject’s initial body fat composition. How should the subjects be blocked? Explain. (4 points)

(01.06 MC)  The number of bagels sold daily for two bakeries…

(01.06 MC)  The number of bagels sold daily for two bakeries is shown in the following table: Bakery A Bakery B 53 34 52 40 50 36 48 38 53 41 47 44 55 40 51 39 Based on these data, is it better to describe the centers of distribution in terms of the mean or the median? Why? Select the correct answer below. (3 points)

(01.03 MC)  A group of people was randomly selected and aske…

(01.03 MC)  A group of people was randomly selected and asked how many hours per day each person spends on gaming. The results of the survey are displayed in the following histogram: What percentage of the people surveyed spend 3 hours or less per day gaming? (4 points)

(02.02 MC)  A group of experimenters has 30 hummingbirds in…

(02.02 MC)  A group of experimenters has 30 hummingbirds in a large container and needs to assign 10 to each of the three groups labeled A, B, and C for an experiment. They can capture the hummingbirds one at a time when the hummingbirds enter a side chamber in the container that is baited with food. Which of the following methods is most likely to result in three comparable groups of 10 hummingbirds each? (4 points)