Please provide ful solution thru excel showing all formulas. Thank you. I will give thumbs up!

5. Repair calls for copiers in Ryerson are handled by one repair person in CCS. Repair duration, including travel time, is exponentially distributed with a mean of two hours per request. Requests for repairs come in at a mean rate of three per eight-hour day and follow Poisson distribution. Find: a) The average number of copiers waiting for repair. b) Server utilization. c) The amount of time during an eight-hour day that the repair person is not out on a call. d) The probability of two or more copiers waiting for or being repaired. e) The probability that a copier waits more than four hours for repair to begin