The probability distribution of a discrete random variable X is given as under:
| X | 1 | 2 | 4 | 2A | 3A | 5A | | P(X) | 1/2 | 1/5 | 3/25 | 1/10 | 1/25 | 1/25 |
Calculate :
(i) The value of A if E(X) = 2.94
(ii) Variance of X.
Given that,
