(Choose 1 answer)
x P(X=x)
Let the random variable X represent the number of automobiles that are used for official bus on any given workday. The probability distribution for company A is
1 0.3
2 0.4
3 0.3
Find the variance of the probability distribution for company A.
A. 0.8
B. 1
C. 0.4
D. 0.6
E. None of the other choices is correct
Exit 17
