Indiana University poststhe grade distributions for its courses online."' In onespring semester, students in Math 118 received 16.1% As,34.3% B's, 29.2% Cs, 9.6% D's, and 9.8% F's. A. What is the...

Indiana University posts the grade distributions for its courses online."' In one spring semester, students in Math 118 received 16.1% As, 34.3% B's, 29.2% Cs, 9.6% D's, and 9.8% F's. A. What is the probability that a randomly chosen Math 118 student gets a B or better, P(X > 3)? B. What is the approximate probability that the grade point average for 25 randomly chosen Math 118 students is B or better, P (X> 3)?