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heelp please y1 1 3 1. The joint probability function of Y1 and Y2 is given. 0.10 0.25 y2 A NO 0.15 0.35 0.05 0.10

heelp please

y1 1 3 1. The joint probability function of Y1 and Y2 is given. 0.10 0.25 y2 A NO 0.15 0.35 0.05 0.10 Find (a) V(Y1), (b) V(Y2), (c) Cov(Yl, Y2), (d) V(4Y1 - 5Y2). Ans. (a) 0.84 (b) 1.84 (c) -0.04 (d) 61.04

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