Q. 38 A machine produces 0, 1 or 2 defective pieces in a day with associated probability
of 1/6, 2/3 and 1/6, respectively. The mean value and the variance of the number
of defective pieces produced by the machine in a day, respectively, are
(A) 1 and 1/3
(B) 1/3 and 1
(C) 1 and 4/3
(D) 1/3 and 4/3
Answer: (A)
Explanation:
