A random variable 'X' has the probability distribution
| X | 0 | 1 | 2 |
| P(X) | k | k | 2k |
then P(X > 1) is :
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → $\frac{1}{2}$
$∑P(X)=1$
$k+k+2k=1$
$4k=1$
$k=\frac{1}{4}$
$P(X>1)$
$P(X=2)$
$=2k$
$=2.\frac{1}{4}=\frac{1}{2}$