Question

Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p.

n = 80, p = 0.2

Answer 1

mean =16

variance=12.8

standard deviation =3.578

Explanation:

mean=np=80×0.2=16

variance= np(1-p)

=16(1-0.2)

=12.8

standard deviation =

`√(12.8)`

=3.5777

=3.578