Question

What are the mean and standard deviation of a binomial probability distribution with `n=15` and `p=3/7`?

Answer 1

Mean `=6.43`
SD `=1.92`

Explanation:

Given-

`n=15`
`p=3/7`

Calculate -

`q=1-p=1-3/7=4/7`

`Mean=np=15 xx 3/7=6.43`
`SD=sqrt(npq)=sqrt(15 xx 3/7 xx 4/7)=sqrt (36.7)=1.92`