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Random Variablesmedium
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Suppose XXX and YYY are random variables such that E[X]=4E[X]=4E[X]=4 and E[Y]=−2E[Y]=-2E[Y]=−2. If Cov(X,Y)=1Cov(X, Y) = 1Cov(X,Y)=1, what is the expected value of the product E[XY]E[XY]E[XY]?