The number of hits to a Web site follows a Poisson process. Hits occur at the rate of 0.3 per minute between 7:00 P.M. and 12:00 P.M.
a) What is the probability that exactly 2 hits occur between 7:15 P.M. and 7:30 P.M.?
b) What is the probability that no hits occur between 11:00 P.M. and 11:15 P.M.?