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  4. Let X and Y be two random variables. The relationship E(XY)=E(X)⋅ E(Y) holds

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Q. Let $ X $ and $ Y $ be two random variables. The relationship $ E(XY)=E(X)\cdot E(Y) $ holds

Jharkhand CECEJharkhand CECE 2012

Solution:

We know that the relationship -
$ E(XY)=E(X)\cdot E(Y) $ holds, when X and Yare independent variables.