One field representative services five customers for a computer manufacturer. Customers request assistance at an average (Poissondistributed) rate of once every four working days. The field representative can handle an average (Poisson-distributed) of one call per day. Determine the following: Use Table 1. a. The expected number of customers waiting. (Round your answer to 3 decimal places.) b. The average length of time customers must wait from the initial request for service until the service has been completed. (Round your answer to 2 decimal places.) c. The percentage of time the service rep will be idle. (Round your answer to 1 decimal place.) d. How much your answer to part a would be reduced if a second field rep were added? (Round your answer to 3 decimal places.)