40. Let pi = P{X = i} and suppose that p1 +p2 +p3 = 1. If E[X]...

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40. Let pi = P{X = i} and suppose that p1 +p2 +p3 = 1. If E[X] = 2, what values of p1, p2, p3

(a) maximize and

(b) minimize Var(X )?

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