The following table shows the probability distribution for a discrete random variable.

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.

Question

The following table shows the probability distribution for a discrete random variable.

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.

anonymous · Answer

A.	28.34
 		B.	31.06
 		C.	35.92
 		D.	23.18

90890908967777878888 · Answer

s2=Σ(xI−x)2/(n−1)