The following table shows the probability distribution for a discrete random
variable.
| X
P(X
12
0.07
15
0.21
17
0.17
20
0.25
22
0.05
24 | 25 | 30
0.04 0.13 0.08
an
The mean of the discrete random variable X is 19.59. What is the variarice
of X? Round your answer to the nearest hundredth.