well, variance is found by using V = n*p*(1-p)p=80% (chances of winning a game)
n=5 (number of games)
expected value of x=4
How do I find the variance and standard deviation of x?
V = 5*.80*.20 = 0.80
The standard deviation is found by taking the square root of the variance.
sigma = sqrt(V) = sqrt(0.80) = .8944
I'm gonna try to figure out the second part of the question now.