Solve the problem. On a multiple choice test with 19 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of correct answers. 14.3 O 9.5 O 4.8 O 6.3 Question 16 4 pts Find the indicated probability. A study was conducted and found that 4% of airplane flights offer a snack on the plane for a flight that departs from Orlando and travels to Miami. If 64 flights from Orlando to Miami are randomly selected, find the probability that exactly 3 of them serve snacks. O 0.091 O 0.375 O 0.139 0.221