how do you find Q?

Question

Find the mean of a binomial distribution when q = 15% and n = 191.

Answer 1

standard deviation of a binomial = sqr(npq) = sqr191(.85)(.15) = sqr24.3525= 4.948 = about 5

population mean = np = 191(1-q) = 191(1-.15) = 191(.85) = 162.35

variance = 24.3525