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Random Variablesmedium
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Consider two random variables XXX and YYY where Var(X)=4Var(X) = 4Var(X)=4, Var(Y)=9Var(Y) = 9Var(Y)=9, and Cov(X,Y)=2Cov(X, Y) = 2Cov(X,Y)=2. What is the variance of X+YX + YX+Y?