Question: Let X and Y have a trinomial distribution with parameters n = 3, pX = 1/6, and pY = 1/2. Find (a) E(X). (b) E(Y).

Let X and Y have a trinomial distribution with parameters n = 3, pX = 1/6, and pY = 1/2. Find
(a) E(X).
(b) E(Y).
(c) Var(X).
(d) Var(Y).
(e) Cov(X, Y).
(f) ρ.

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