The taxi and takeoff time for commercial jets is a random variable x with a mean of 8.2 minutes and a standard deviation of 3.4 minut 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 t in USE SALT (a) What is the probability that for 35 jets on a given runway, total taxi and takeoff time will be less than 320 minutes? (Round x 0 (b) What is the probability that for 35 jets on a given runway, total taxi and takeoff time will be more than 275 minutes? (Rounc (C) What is the probability that for 35 jets on a given runway, total taxi and takeoff time will be between 275 and 320 minutes?