# Question: A pair of discrete random variables has a PGF given

A pair of discrete random variables has a PGF given by

(a) Find the means, E [M] and E [N].

(b) Find the correlation, E [MN].

(c) Find the joint PMF, P M, N (m, n).

(a) Find the means, E [M] and E [N].

(b) Find the correlation, E [MN].

(c) Find the joint PMF, P M, N (m, n).

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