exercise per week. It is known that the average number of times college exercise is 3.5. Below are data from the group of students watched the educational video about the importance of exercise. Use this data to answy wer the question: Does the educational video affect (1.e., cause a difference in) the number of times per week that college students exercise? Times Exercised Per Week (x-m) 16 10 34 SS 3.78 S- 1.94 | s a. What are the independent variable (with the levels) and the dependent variable of the study? b. Step 1: Write the null and research hypotheses in symbols. Calculate the standard erer