1) Professor Menjivar assumes that exam scores are normally distributed and wants to grade on the curve. The mean score was 58, with a standard deviation of 16. a) If he wants 15% of the students to...

1) Professor Menjivar assumes that exam scores are normally distributed and wants to grade on the curve. The mean score was 58, with a standard deviation of 16.

a) If he wants 15% of the students to receive an A. Find the minimum score to receive an  A.

b) If he wants 20 percent of the students to receive a B. Find the minimum score to receive a B?

c) If he wants 40% to receive a C. find the minimum score to receive a C.