Question

X 11 14 16 19 21 23 24 29
P(X) 0.07 0.21 0.17 0.25 0.05 0.04 0.13 0.08
The mean of the discrete random variable X is 18.59. What is the variance of X? Round your answer to the nearest hundredth.

Answer 1

just compute

\[\sum_{x}[x^2p(x)]-\mu^2\]

Answer 2

i need the answer im confused