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.) Answer is complete but not entirely correct. 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.)