The number of days ahead travelers purchase their airline tickets can be modeled by an exponential distribution with the average amount of time equal to 34 days. Find the probability that (a) a traveller purchases a ticket no more than 85 days ahead of time. (b) a traveller purchases a ticket more than 89 days ahead of time. (c) a traveller purchases a ticket within 85 and 89 days ahead of the flight date. Round all answers to four decimal places. Get Help