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value 10.00 points Problem 18-1 Repair calls are handled by one repairman at a photocopy shop....
18 Homework Problems Problem 18-1 Repair calls are handled by one repairman at a photocopy shop. Repair time, including travel time, is exponentially distributed, with a mean of 25 hours per call Requests for copler repairs come in at a mean rate of 2.1 per eight-hour day (assume Poisson). a. Determine the average number of customers awaiting repairs. (Round your answer to 2 decimal places.) Number of customers b. Determine system utilization (Round your answer to the nearest whole percent....
Please help somewhat confused on all parts Repair calls are handled by one repairman st a photocopy shop. Repair time, including travel time, is exponentisly distributed, with a mean of 2.0 hours per call. Requests for oopier repairs oome in at a mean rste of 2.1 per eight-hour day (assume Poisson) a. Determine the average number of oustomers awaiting repairs (Round your answer to 2 decimal places.) Number of customers 0.58 b. Determine system utilization. (Round your answer to the...
A small town with one hospital has 4 ambulances to supply ambulance service. Requests for ambulances during nonholiday weekends average 0.68 per hour and tend to be Poisson-distributed. Travel and assistance time averages 2.40 hours per call and follows an exponential distribution Use Table 1. a. Find system utilization. (Round your answer to the nearest whole percent. Omit the "%" sign in your response.) System utilization % b. Find the average number of customers waiting. (Round your answer...
Question 57 (5 points) A copier is able to operation for an average of 250 hours between repairs and the mean repair time is 15 hours. Determine the availability of the copier. Round your answer to three decimal points. Your Answer: Answer
Huang’s television-repair service receives an average of 9 TV sets per 6-hour day to be repaired. The service manager would like to be able to tell customers that they can expect their TV back in 4 days. What average repair time per set will the repair shop have to achieve to provide 4-day service on the average? (Assume that the arrival rate is Poisson distributed and repair times are exponentially distributed.) (Round answer to 2 decimal places, e.g. 2.75.) Average...
1. value: 10.00 points The auto repair shop of Quality Motor Company uses standards to control the labor time and labor cost in the shop. The standard labor cost for a motor tune-up is given below: Job Standard Hours Standard Rate Standard Cost Motor tune-up 1.80 $5.50 $9.90 The record showing the time spent in the shop last week on motor tune-ups has been misplaced. However, the shop supervisor recalls that 170 tune-ups were completed during the...
x Your answer is incorrect. Try again. Huang's television-repair service receives an average of 5 TV sets per 10-hour day to be repaired. The service manager would like to be able to tell customers that they can expect their TV back in 5 days. What average repair time per set will the repair shop have to achieve to provide 5-day service on the average? (Assume that the arrival rate is Poisson distributed and repair times are exponentially distributed.) (Round answer...
Problem 15-9 (Algorithmic) Marty's Barber Shop has one barber. Customers have an arrival rate of 2.3 customers per hour, and haircuts are given with a service rate of 4 per hour. Use the Poisson arrivals and exponential service times model to answer the following questions: What is the probability that no units are in the system? If required, round your answer to four decimal places. P0 = What is the probability that one customer is receiving a haircut and no...
Problem 15-27 (Algorithmic) Gubser Welding, Inc., operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the company's office can be described by a Poisson probability distribution with an arrival rate of four jobs per 8-hour day. The time required to complete the jobs follows a normal probability distribution, with a mean time of 1.4 hours and a standard deviation of 1 hour. Answer the following questions, assuming that Gubser uses one welder...
The time between calls to a plumbing supply business is exponentially distributed with a mean time between calls of 14 minutes. (a) What is the probability that there are no calls within a 30-minute interval? 10.1353 (Round your answer to 4 decimal places.) (b) What is the probability that at least one call arrives within a 10-minute interval? || 0.4866 (Round your answer to 4 decimal places.) (c) What is the probability that the first call arrives within 5 and...