Question: 4. {X, Y } be independent random variables with E[X] = 2, E[X?] = 5, E[Y] = 3, E[Y?] = 11. Find the correlation coefficient

4. {X, Y } be independent random variables with E[X] =

4. {X, Y } be independent random variables with E[X] = 2, E[X?] = 5, E[Y] = 3, E[Y?] = 11. Find the correlation coefficient p between X and X - 4Y. Hint. Recall the alternate formula for the covariance between two random variables {U, V } which is Cov[U, V] = E[UV] - EU]E[V]

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