Please and thanks

A certain flight arrives on time 85 percent of the time. Suppose 177 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that (a) exactly 143 flights are on time (b) at least 143 flights are on time. (c) fewer than 152 flights are on time (d) between 152 and 159, inclusive are on time. (a) P(143) = (Round to four decimal places as needed.) (b) P(X 2 143) = (Round to four decimal places as needed.) (c) P(X