Given E(X) = 5 and E(Y) = -2, then E(X – Y) is _______ (a) 3 (b) 5

1.	Given E(X) = 5 and E(Y) = -2, then E(X – Y) is _______ (a) 3 (b) 5 (c) 7 (d) -2
Answer» (c) 7 E(X – Y) = E(X) – E (Y) = 5 – (-2) = 7 .

Given E(X) = 5 and E(Y) = -2, then E(X – Y) is _______ (a) 3 (b) 5 (c) 7 (d) -2

Answer»

(c) 7

E(X – Y) = E(X) – E (Y) = 5 – (-2) = 7 .