The probability distribution of a random variable X is given by :
| X | 1 | 2 | 3 | 4 | 5 |
| P(X) | 2K | K | 3K | 4K | K |
Then the value of K is :
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → $\frac{1}{11}$
The value of probability should be equal to 1.
$⇒2k+k+3k+4k+k=1$
$⇒11k=1$
$⇒k=\frac{1}{11}$