The time between аrrivаls оf smаll aircraft at an airpоrt is expоnentially distributed with a mean of [a] hours. This copywritten question is part of a quiz or exam at Arizona State. It may not be posted or reproduced without the permission of the author, Dr. L. Chattin, and Arizona State University. What is the probability that two or more aircraft arrive within one hour? Express your answer to four decimal places.