Question: Problem 5.5 Let (X, Y ) have the joint pmf given in Problem 5.4. Compute: (a) E(X), E(X2), V (X). (b) E(Y ), E(Y 2),

Problem 5.5 Let (X, Y ) have the joint pmf given in Problem 5.4. Compute:

(a) E(X), E(X2), V (X).

(b) E(Y ), E(Y 2), V (Y ).

(c) E(XY ).

(d) Cov(X, Y ) and ρ(X, Y ).

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