Question: 1. Plot the probability mass function of the sample mean of X1, . . . , Xn, when (a) n = 2; (a) n =

1. Plot the probability mass function of the sample mean of X1, . . . , Xn, when

(a) n = 2;

(a) n = 3.

Assume that the probability mass function of the Xi is P{X = 0} = .2, P{X = 1} = .3, P{X = 3} = .5 In both cases, determine E[X ] and Var(X ).

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