What are the mean and standard deviation of a binomial probability distribution with #n=130 # and #p=7/9 #?
1 Answer
May 7, 2016
Mean =
Standard Deviation = 4.74 (3 sig. fig.)
Explanation:
Mean = np, so
Variance = npq.
We know that
So
Therefore the variance is
Standard deviation is the square root of the variance, so s.d. =