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 it will be between 15 and 30 more minutes before the next customer arrives.

A) .2326
B) .3461
C) .2784
D) .3523
E) .2558