Question
Let X be a random variable with distribution.
If the mean of X is 2.3 and variance of X is $\sigma$2, then 100 $\sigma$2 is equal to :
| x | $ - $2 | $ - $1 | 3 | 4 | 6 |
|---|---|---|---|---|---|
| P(X = x) | ${1 \over 5}$ | a | ${1 \over 3}$ | ${1 \over 5}$ | b |
If the mean of X is 2.3 and variance of X is $\sigma$2, then 100 $\sigma$2 is equal to :
Correct Answer
781