Unless stated otherwise in the exercise, use software to find the exact Poisson.
5.47 Traffic model.
The number of vehicles passing a particular mile marker during 15-minute units of time can be modeled as a Poisson random variable. Counting devices show that the average number of vehicles passing the mile marker every 15 minutes is 48.7.
5.47
(a) 0.4450 (0.4247 using Normal). (b) . . (c) 0.4095 (0.3974 using Normal).