O e.o QUESTION 2 In a course, the grade is based only on the midterm and the final exams. Suppose that the maximum possible score is 40 points in the midterm, and 60 points in the final. So the maximum total score is 100 points. Some summary statistics on exam scores are as follows Midterm exam: mean = 30, variance 16 Final exam: mean = 50, variance 36 Covariance between the midterm and the final exam scores = 15 Determine the correlation coefficient between the midterm and the final scores. O a. 0.6 O b. 0.4 O C. 0.75 O d. 0.625 O e. 0.5 QUESTION 3 lad. The soup sales increase in winter and the salad sales increase in summer