A member is selected at random and we take X = 0 if he opposed, and X = 1 if
he is in favour Find E(X) and Var (X) Choose the correct answer in each of the following:
16 The mean of the numbers obtained on throwing a die having written 1 on three
faces, 2 on two faces and 5 on one face is
(A) 1
(B) 2
(C) 5
(D) 8
3
17