This needs answered immediately. A different tutor was assigned to me and he gave me numerous incorrect answers out of 17 problems and this is due today in a few hours. This is just one of the problems he got wrong and needs answered today by 5 PM EST. It cannot be late or is of no use to me. The deadline can NOT be extended.
The time to fly between New York City and Chicago is normally distributed with a mean of 140 minutes and a standard deviation of 15 minutes. What is the probability that a flight takes less than 140 minutes or greater than 160 minutes?