# Question

Let X be a random variable with E[X] = 1 and var(X) = 4. Find the following:

(a) E [2X – 4];

(b) E[X2];

(c) E [(2X – 4) 2].

(a) E [2X – 4];

(b) E[X2];

(c) E [(2X – 4) 2].

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