how do i find the probability in question 5? Also how do i find standard Deviation in question 6

5) A tennis player makes a successful first serve 51% of the time. If she serves 9 times, what is the 5) probability that she gets exactly 3 successful first serves in? Assume that each serve is independent of the others. A) 0.133 B) 0.0635 C) 0.154 D) 0.00184 6) Find the standard deviation, o, for the binomial distribution which has the stated values of n and 6) p. Round your answer to the nearest hundredth. n = 765; p = 2/5 q- 3/5 A) 0 =7.87 B) = 13.55 C) o = 14.40 D) . = 10.28 C-2