The taxi and take off time for commercial jets is a random variable x with a mean of 9 minutes and a standard deviation of 3.4 minutes. Round your answers to four decimal places

The taxi and takeoff time for commercial jets is a random variable x with a mean of 9 minutes and a standard deviation of 3.4 minutes. Assume that the approximately normal. You may assume that the jets are lined up on a runway so that one taxies and takes off immediately after the other, and that the LA USE SALT (a) What is the probability that for 34 jets on a given runway, total taxi and takeoff time will be less than 320 minutes? (Round your answer to fo (b) What is the probability that for 34 jets on a given runway, total taxi and takeoff time will be more than 275 minutes? (Round your answer to (c) What is the probability that for 34 jets on a given runway, total taxi and takeoff time will be between 275 and 320 minutes? (Round your ansv 18. [-/2.65 Points] DETAILS BBUNDERSTAT12 6.5.023.S