assume that a procedure yields a binomial distrobution with a trial repeated n times. Use the binomial probability formula (or button on the calculator) to find the probability of x successes given...

assume that a procedure yields a binomial distrobution with a trial repeated n times. Use the binomial probability formula (or button on the calculator) to find the probability of x successes given the probability p of successes on a single trial:

(a) n = 4, x = 3, p = 1/6

(b) n = 30, x = 12, p = 0.20