The number of hits to a Web site follows a Poisson process. Hits occur at the rate of 0.5 per minute between 7:00 P.M. and 9:00 P.M. Given below are three scenarios for the number of hits to the Web site. Compute the probability of each scenario between 7:21 P.M. and 7:29 P.M. and interpret the results. (a) exactly six hits (b) fewer than six hits (c) at least six hits (a) P(6) = (Round to four decimal places as needed.)