1. Let X and Y have the joint pmf given below. (x, y) | (1, 1) (1, 2) (1,3) p(x, y) | 2/15 4/15 (2, 1) (2, 2) (2, 3) 1/5 1/15 1/15 4/15 and p(x, y) is equal to zero elsewhere. Find the means µi and µ2, variances o? and o, and the correlation coefficient.

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