Question

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

n=129
p=0.79
The​ mean is ______
. ​(Round to the nearest tenth as​ needed.)
The​ variance,
σ^2 is ______
​(Round to the nearest tenth as​ needed.)
The standard​ deviation, ______

Answer 1

The Binomial distribution has specific formulas for mean, variance, and standard deviation:

mean=n*p
variance=n*p*(1-p)
std. deviation=sqrt(variance)