need help pls

O 0.6357 A certain famous Canadian tennis player makes a successful first serve 56%% of the time. Assume that each serve is independent of the others. If she serves 4 times, what is the probability that exactly 2 of these first serves will be in? O 0.5926 O 0.3643 O 0.4074 QUESTION 2 O 14.4 In Melanie's Styling Salon, the time to complete a simple haircut is normally distributed with a mean of 23 minutes and a standard deviation of 5 minutes. For a simple haircut, the range for the middle 95 percent of haircut times, in minutes, will be: O 16.45 O 20.625 O 19.6 QUESTION 3 O Disjoint Consider two random events A and B. Event Ac is the complement of event A, and Bc is the complement of B. P(A) =0.83. P(B) = 0.15, and P(A and B) =0.1245. Then we can say that the two events A and B are: O Independent O Both independent and disjoint Not independent QUESTION 4 O 0.0566 If the random variable Z follows the standard normal distribution, then P(1.47