The random variables X and Y are independent if ______ (a) E(XY) = 1 (b) E(XY) = 0 (c) E(XY) = E(X) E(Y) (d) E(X + Y) = E(X) + E(Y)

The random variables X and Y are independent if ______ (a) E(XY) = 1�

1.	The random variables X and Y are independent if ______ (a) E(XY) = 1 (b) E(XY) = 0 (c) E(XY) = E(X) E(Y) (d) E(X + Y) = E(X) + E(Y)
Answer» (c) E(XY) = E(X) E(Y)