A probability distribution function for a random variable X is given as
| X | 0 | 1 | 2 | 3 |
| P(X) | M | 1/5 | 1/5 | 1/5 |
Then the value of M is
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 2/5
The probabilities of a probability distribution add up to 1:
\( \displaystyle M+\frac{1}{5}+\frac{1}{5}+\frac{1}{5}=1 \)
\( \displaystyle M=1-\frac{3}{5}=\frac{2}{5} \)