What are the mean and standard deviation of a binomial probability distribution with #n=130 # and #p=3/4 #?
1 Answer
Nov 26, 2015
Mean is nxp and variance is nxpxq
Explanation:
Here n = 130
p =
#3/4#
q =#1/4#
So mean = 130 x#(3/4)# =#390 / 4# = 97.5
Variance = 130 x#3/4# x#1/4# =#390/16# = 24.375
Standard deviation =#sqrt(variance)# =#sqrt(24.375)#
