Answer Happy

Posted: **Thu May 05, 2022 8:26 pm**

: Question Suppose That X And Y Are Random Variables With E X 2 E Y 5 And E X2 8 E Y2 30 And Cov X 2y 1 (344.6 KiB) Viewed 14 times

Question * Suppose that X and Y are random variables with E(X) = 2, E(Y) = 5 and E(X2) = 8, E(Y2) = 30 and cov(X + 2Y. -3X +4Y) = -12, then cov(2X + 3,-3Y + 4) is equal to: Hint: cov(ax + bY, cX+dY) = acV(X) + bdV (Y) + (bc + ad)cov(X,Y) O -120 O-64 O-59 O -30