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Let Y 1 and Y 2 be continuous random variables with joint probability density function f (y 1 , y 2 ) = e y1

Let Y1 and Y2 be continuous random variables with joint probability density function f (y1, y2) = ey1 , 0 y2 y1 < . Find (a) Cov(Y1, Y2) and (b) V (2Y1 3Y2). Ans. (a) 1 (b) 5

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