Question: 3. (10 points) If the random variables X1 and X2 have joint probability mass function p(X1, X2) = 12, (x, x2 ) = (1,1), (1,2),

3. (10 points) If the random variables X1 and X2 have

3. (10 points) If the random variables X1 and X2 have joint probability mass function p(X1, X2) = 12, (x, x2 ) = (1,1), (1,2), (2,1), (2,2) , find E(X, [ X ). Are these random variables independent

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