Question

In a binomial experiment, the probability that a person scores a point is given as 29%. if he tries 69 times, what is the standard deviation of this binomial experiment? round your answer to 4 decimal places.

Answer 1

In binomial distribution, 
n=sample size =69
p=probability of success = 0.29
mean = np = 69*.29= 20.0100
variance = npq = np(1-p) =20.01(1-0.29)=14.20710
standard deviation=sqrt(variance)=3.76923
(round to appropriate number of decimal places)