The Waiting Time Before a Caller Is Able to Speak

Multiple Choice

The waiting time before a caller is able to speak to a customer service representative at Chase Bank is exponentially distributed, with an average waiting time of 2.5 minutes.How likely is it that a caller will wait less than 2 minutes?

A) .4867
B) .5982
C) .5506
D) .4356
E) .5289