During Late-Night Hours, the 10^th Street Convenience Store Averages Four

Multiple Choice

During late-night hours, the 10^th Street convenience store averages four customers per hour.No customers have arrived in the last half-hour.Assuming that all Poisson conditions are met, determine the probability that the next customer won't arrive for at least 45 more minutes.

A) .0498
B) .0732
C) .1430
D) .4168
E) .0992