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Suppose that X, Y,Z are independent, with E(X)=E(Y)=E(Z)=2, and E(X^2)=E(Y^2)=E(Z^2)=5, so Cov(XY,XZ) is epose that are independent, with and so is

Suppose that X, Y,Z are independent, with E(X)=E(Y)=E(Z)=2, and E(X^2)=E(Y^2)=E(Z^2)=5, so Cov(XY,XZ) is

epose that are independent, with and so is

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