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

Multiple Choice

The manager of the local grocery store has determined that,on the 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