19.14 More on course grades. In Exercise 19.12, you explained how to simulate the grade of a randomly chosen student who took the accelerated statistics course in the last 10 years. Suppose you select five students at random who took the course in the last 10 years. Use simulation to estimate the probability that all five got a C or better in the course. (Simulate 20 repetitions and assume the student grades are independent of each other.)