Mathematics, 20.02.2020 22:28, abigailjackson

Let X1 and X2 have the joint pmf p(x1, x2) = x1x2/36, x1 = 1, 2,3 and x2 = 1, 2, 3, zero elsewhere. Find first the joint pmf of Y1 = X1X2 and Y2 = X2, and then find the marginal pmf of Y1

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Let X1 and X2 have the joint pmf p(x1, x2) = x1x2/36, x1 = 1, 2,3 and x2 = 1, 2, 3, zero elsewhere....