1) Does listening to music while working out have an impact on the length of the workout?A sample of college students was randomly assigned to one of two groups.One group worked out on a treadmill while listening to rock music playing the background; the other group worked out on a treadmill with no music playing in the background.It was found that those who worked out while rock music was playing spent more minutes on the treadmill, on average, than those who were working out with no music playing.The explanatory variable in this experiment is

A) the length of the workout

B) whether or not music was playing

C) the college students

D) the researchers

Question 2 1 pts The boxplot below shows the distribution of heights (in inches) ofa random sample of college students. What percentage of students have heights between 64 inches and 69 inches? ll:|:lI 58 59 60 61 62 6! 64 65 66 67 6! 69 70 7| 72 73 74 75 Helgm (Inches) IMPORTANT Note: In the event that the image above does not show up for you, click this M A; to download the image onto your computer so you can View it another way. ' 25%. \" 50% ' 75% " It's impossible to answer this without knowing the sample size. Question 10 1 pts The histogram below shows the distribution of the number of hours spent playing video games on weekends by a sample of college students. How would you expect the mean and median to compare to each other in this distribution? Hours Spent Playing Video Games on Weekends 10 9 9 8 8 7 u .3 6 '5 5 93' 4 E 3 3 2 2 1 0 O 5 10 15 20 25 Number of hours IMPORTANT Note: In the event that the image above does not show up for you, click this m i to download the image onto your computer so you can view it another way. A The mean will be greater than the median. A The mean will be less than the median. "' The mean will be equal to the median. "' It is impossible to speculate how the mean and median will compare