### Finding E(Y) for a moment-generating function.

3.88 ===== Use your answer from 3.87 to show that E(Y) = aE(X) +b 3.87: [ If X is a random variable with moment-generating function M(t), and Y is a function of X given by Y=aX+b, show that the moment-generating function for Y is e^(tb) * M(at) ] My answer for exercise 3.87 is attached.