(Answered) : Repair Calls Handled One Repairman Photocopy Shop Repair Time Including Travel Time Expone Q28740751

Repair calls are handled by one repairman at a photocopy shop.Repair time, including travel time, is exponentially distributed,with a mean of 2.7 hours per call. Requests for copier repairs comein at a mean rate of 1.8 per eight-hour day (assume Poisson).

a. Determine the average number of customersawaiting repairs. (Round your answer to 2 decimalplaces.)
  
Number of customers            

b. Determine system utilization. (Roundyour answer to 2 decimal places. Omit the “%” sign in yourresponse.)
  
System utilization            %

c. Determine the amount of time during aneight-hour day that the repairman is not out on a call.(Round your answer to 2 decimal places.)
  
Amount of time            hours

d.