Question: 7. Let X and Y be jointly distributed with (X, Y ) = 2/3, X = 1, Var(Y ) = 9. Find Var(3X 5Y

7. Let X and Y be jointly distributed with ρ(X, Y ) = 2/3, σX = 1, Var(Y ) = 9. Find Var(3X − 5Y + 7).

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