Question

for a binomial process the probability of success is 40 percent and the number of trials is 5. find the variance.

Answer 1

For a Binomial process,   
given    
p = probability of success = 40% = 0.4   
n = number of trials = 5   
Variance of a binomial process   
= n*p*(1-p)  
= 5 * 0.4 * (1 - 0.4)  
= 1.2  
Variance = 1.2