In a study of the effects of exercise on cardiovascular fitness, a sport psychologist randomly assigned participants to one of four groups. Participants engaged in aerobic exercise for either 0, 15, 30, or 60 minutes three days a week for three months. Which of the following statements is true about this study?
A)There is no control group.
B)Participants in the control group did not exercise.
C)There are four independent variables.
D)The dependent variable has four levels.

Question

Quizplus · Accepted Answer

The control group in this study is the group assigned to 0 minutes of exercise, as they did not engage in the exercise intervention being tested.

In a Study of the Effects of Exercise on Cardiovascular