Question

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

Answer 1

I believe I answered the question, just find the probability of

7 failures ( a 6/7 chance each time)

3 successes (a 1/7 chance each time)

Then multiply.

Answer 2

B
.1546