Math
posted by Rae .
For n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x successes. Round your answer to four decimal places
n = 10, p = 1/7, x = 3
A. 0.1189
B. 0.1546
C. 0.1308
D. 0.1427

Plug the variables in.
For 10 repeated independent trials, with constant probability of success 1/7 for all trials, find the probability of exactly 3 successes. Round your answer to four decimal places
first find probablility of 3 successes,
then find probability of 7 failures.