Find the indicated probability.
-A tennis player makes a successful first serve 51% of the time. If she serves 9 times, what is the probability that she gets exactly 3 first serves in? Assume that each serve is independent of the others.
A) 0.154
B) 0.00184
C) 0.0635
D) 0.133

Question

Quizplus · Accepted Answer

The probability of making a successful first serve is 0.51, and the probability of missing is 0.49. The probability of getting exactly 3 first serves in is:P(3 successes) = (9 choose 3) * (0.51)^3 * (0.49)^6 = 0.154

Find the Indicated Probability