The following is the probability mass function for the number of times a certain computer program will malfunction: 0 1 2 3 4 5 p(x) | 0.05 0.28 0.42 0.15 0.08 0.02 (a) what is the probability that the computer program will malfunction more than 3 times? (b) compute e(x), e(x2), and v(x). e(x) = e(x2) = v(x) = (c) suppose y, the time in minutes to fix malfunctions, relates to the number of times the program malfunctions, by the function: y = 9*x . what is the expected time in minutes needed to fix malfunctions in the program? d) what is the variance of the time in minutes to fix the malfunctions?