One field representative services five customers for a computer manufacturer. Customers request assistance at an average (Poisson-distributed) rate of once every six workdays. The field representative can handle an average (Poisson-distributed) of two call per day.

1. What is the expected number of customers waiting? (Round the final answer to 3 decimal places.)

2. What is the average length of time customers must wait between the initial request and until service is completed? (Round the final answer to 2 decimal places.)

3. By how much would the answer to question 1 be reduced if a second field representative was added? (Round the final answer to 3 decimal places.)