The Manager of the Local Grocery Store Has Determined That,on

Multiple Choice

The manager of the local grocery store has determined that,on average,4 customers use the service desk every half-hour.Assume that the number of customers using the service desk has a Poisson distribution.What is the probability that during a randomly selected half-hour period,no more than 2 customers use the service desk?

A) .2381
B) .1465
C) .7619
D) .8535
E) .0916