2. Midterm Scores, continued Refer to Exercise 1.

a. Calculate r, the correlation coefficient between the two midterm scores. Describe the relationship between scores on the first and second midterms.

b. Calculate the regression line for predicting a student’s score on the second midterm based on the student’s score on the first midterm.

c. Using the regression line from part

b, predict a student’s score on the second midterm if his first score was 85.