What is the variance of a binomial distribution for which n = 75 and p = 0.20?
2 Answers
Nov 1, 2015
75 x
Explanation:
The formula for the variance of a binomial distribution is n x p x q where q = 1 - p. Here n = 75, p = .20 or
Nov 1, 2015
The answer is
Explanation:
Note that if
Now your
n=75 andp=0.20 .So your variance =
75×0.20×(1−0.20)=75×0.20×0.80=12