A baseball player has a batting average of 0.22. What is the probability that he has exactly 5 hits in his next 7 at bats?

Answer 1

This is solved using a binomial distribution. x = number hits (success), n = number of trials = 7, p = probability of success = 0.22. B(x,n) = binomial probability of x successes in n trials = C(x,n) p^x (1-p)^(n-x).