Question: Let X be a probability function of discrete random variable defined as p (x) = qx where x = 1,2,3, 4 and q is a

Let X be a probability function of discrete random variable defined as

p (x) = qx

where x = 1,2,3, 4 and q is a constant.

(a) Obtain the value of q.

(b) Construct the probability distribution table of X.

(c) Calculate calculate the following:

i. E(X)

ii. E(X2)

iii. Var (X)

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