4. In a small summer course, Professor Blinky wants to compare the amount of homework completed to final grades as shown in the table below. X (Homework completed) Y (Final grades) 6 8 4 2 6 82 93 78 40 40 70 70 a. Draw a scatter diagram. Label your axes. Comment on the type of relationship that appears to exist between homework completed and final grades. b. Find the correlation coefficient (r). c. Predict the final grade of a student who completes 5 homework assignments.