Question

a die is thrown 100 times.If getting an even number is considered a sucess, then the standard deviation of the number of succeesses is​

Answer 1

Answer:

The variance of the number of successes is. Let X denote the number of successes in 100 trials. Then, X follows binomial distribution with n=100 and p=36=12. ∴Variance of X=npq=100×12×12=25.