The customer support hotline for Bitway Computers is currently staffed by two technicians. Calls arrive randomly at a rate of seven per hour and follow a Poisson distribution. The technician can service calls at an average rate of ten per hour, but the actual time required to handle a given call is an exponential random variable.

What is the expected number of customers waiting for the call being answered?

a. 0.0977

b. .1523

c. .9

d. .0061

Question 9

What is the expected waiting time before a customers call being answered?

a. 0.0976 hours

b. 0.01396 hours

c. 0.11396 hours

d. 0.8 hours