A dolphin show is scheduled to start at 9:00 A. M., 9:30 A. M., and 10:00 A. M. Once the show starts, the gate will be closed. A visitor will arrive at the gate at a time uniformly distributed between 8:30 A. M. and 10:00 A. M. Determine c) The probability that a visitor waits less than 17 minutes for a show.

(Round your answer to 3 decimal places.)
d) The probability that a visitor waits more than 13 minutes for a show.