Question

discrete random variable X has the probability function P(X=x) = {k(1-x)2 x= -1,0,1 and 2
0 otherwise (a) show that k = 1/6
(b) Find E(X)
(c) Show that E(X2) = 4/3 (d) Find Var (1-3x)

Answer 1

Answer:

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Step-by-step explanation:

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