The probability distribution of a discrete random variable x is given below:
|
x |
2 |
3 |
4 |
5 |
|
p(x) |
$\frac{5}{k}$ |
$\frac{7}{k}$ |
$\frac{9}{k}$ |
$\frac{10}{k}$ |
The value of k is:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) - 31
$∑P(X)=1$
$⇒\frac{5+7+9+10}{k}=1⇒k=31$