What is the mean of f(x) = 3x + 2 where x is a random variable with probability distribution
| X = x | 1 | 2 | 3 | 4 | | P(X = x) | 1/6 | 1/3 | 1/3 | 1/6 |
(A) 19/2
(B) 15/2
(C) 5/2
(D) 5/3
Correct option (D) 5/3
Explanation:
