Assume that the probability of getting an A in a specific course is 0.08, and suppose that the all student grades are independent. If you randomly sample 20 students taking the course;
a) Compute the expected number of students that will get an A, and the standard deviation of number of students that will get an A.
b) Compute the probability that no student gets an A.
c) Compute the probability that at most 2 students get an A.
d) Compute the probability that between 2 and 4 students get an A