Assume that X is a discrete random variable with finite range, and set p(x) = P(X = x)
Chapter 12, Problem 25(choose chapter or problem)
Assume that X is a discrete random variable with finite range, and set p(x) = P(X = x) (a) Show that E(aX + b) = # x (ax + b)p(x) (b) Use your result in (a) and the rules for finite sums to conclude that E(aX + b) = aE(X) + b
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