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 # and# p = 0.20 # .So your variance =
# 75 times 0.20 times ( 1 - 0.20 ) = 75 times 0.20 times 0.80 =12#