If X Is a Binomial Random Variable, Calculate $\sigma ^ { 2 } \text { for } n = 40 \text { and } p = 0.3 \text {. }$

Multiple Choice

If x is a binomial random variable, calculate $\sigma ^ { 2 } \text { for } n = 40 \text { and } p = 0.3 \text {. }$

A) 12
B) 3.6
C) 2.898
D) 8.4