Refer to Exercise 3.156. a If W = 3Y , use the moment-generating function of W to show
Chapter 3, Problem 3.157(choose chapter or problem)
Refer to Exercise 3.156. a If W = 3Y , use the moment-generating function of W to show that E(W) = 3E(Y ) and V(W) = 9V(Y ). b If X = Y 2, use the moment-generating function of X to show that E(X) = E(Y ) 2 and V(X) = V(Y ).
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