A random variable X has the following probability distribution where k is some number :
| X | 0 | 1 | 2 |
| P(X) | k | 2k | 3k |
Find value of k.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → $\frac{1}{6}$
$∑p(x_i)=1$
so $K+2K+3K=1$
$6K=1⇒K=\frac{1}{6}$