Acertain flight arrives on time 85 percent of the time. suppose 127 flights are randomly selected. use the normal approximation to the binomial to approximate the probability that (a) exactly 101 flights are on time. (b) at least 101 flights are on time. (c) fewer than 102 flights are on time. (d) between 102 and 115, inclusive are on time.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?