The University Police Department Must Write, on Average, Five Tickets

Multiple Choice

The university police department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with a mean of 7.5. Find the probability that fewer than six tickets are written on a randomly selected day.

A) 0.621845
B) 0.241436
C) 0.378155
D) 0.758564