Which of the following is an example of a combination? A. Selecting a first-, second-, and third-place winner at a beauty
competition
B. Picking 4 sets of towels out of 20 different sets
C. The number of ways 12 picture frames can be arranged in a row
on a shelf
D. The number of ways 3 people can win 3 different prizes

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%