For the random variable X and Y in Problem 5.2.2 find (a) The expected value of W

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For the random variable X and Y in Problem 5.2.2 find

(a) The expected value of W = 2xy

(b) The Correlation, rx,y = E[XY],

(c) The covariance, Cov[X,Y],

(d) The correlation coefficient, P X,Y

(e) the variance of X + Y, Var[X + y] .

(Refer to the results of Problem 5.3.2 to answer some of these questions.)

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