4. If Var(x1) = 5, Var(X2) = 4, Var(X3) = 7, Cov(X1, X2) = 3, Cov(X1, X3) = -2, and X2 and X3 are independent, find the
Posted: Mon Nov 15, 2021 12:21 pm
4. If Var(x1) = 5, Var(X2) = 4, Var(X3) = 7, Cov(X1, X2) = 3, Cov(X1, X3) = -2, and X2 and X3 are independent, find the covariance of Yi = X1 - 2X2 +3X3 and Y2 = -2X1 +3X, + 4X3