Let X be a random variable with probability distribution
X -1 0 1 2 3
F(X) 0.125 .50 0.20 0.05 0.125
a) Find E(X) and VAR(X).
b) Find the probability distribution of the random variable Y= 2X+1. Using the
probability distribution of Y determine E(Y) and VAR(Y).
a)
b)
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