Question
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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Introduction to graph theory
Authors: Douglas B. West
2nd edition
131437372, 978-0131437371
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