eBookProblem 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 tocomplete 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 to complete all jobs:a. Wd. What is the average time a job waits before the welder can begin working on it? If required, round your answer to one decimal place.hoursplaces.e. What is the average number of hours between when a job is received and when it is completed? If required, round your answer to one decimal place.hoursf. What percentage of the time is Gubser's welder busy?of the time the welder is busy.

Queuing theory-Is about the mathematical study of of waiting lines, or queues. Queuing models are…

Answered: Gubser Welding, Inc., operates a…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

See similar textbooks

Similar questions

The Rockwell Electronics Corporation retains a service crew to repair machine breakdown that occur on an average of λ = 3 per day (approximately Poisson in nature). The crew service an average of μ = 8 machines per day, with a repair time distribution that resemble the exponential distribution. a. What is the probability that more than one machine is in the system? Probability that more than two are broken and waiting to be repaired or being serviced? More than three? More than four?
Please solve this in excel. Ray is planning to open a small car-wash operation for washing just one car at a time. He must decide how much additional space to provide for waiting cars. Ray estimates that customers would arrive according to a Poisson input process with a mean rate of 1 every 4 minutes, unless the waiting area is full, in which case the arriving customers would take their cars elsewhere. The time that can be attributed to washing one car has an exponential distribution with a mean of 2 minutes. Suppose that Ray makes an average $4 per served customers. Moreover, each car space rented for waiting costs $800 per month. Ray is planning to run the car-was for 200 hours every month. 2. How much space should Ray provide for the waiting cars in order to maximize his expected net profit? (By net profit, we mean profit from car-wash operations minus the rental cost)
For a bank branch simulation, the assumptions on customer queueing and service facility in the branch, customer waiting in one line or many lines, and served according to first come first serve rule or priority rule are examples for structural assumptions. Select one: True False
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 five jobs per 8-hour day. The time required to complete the jobs follows a normal probability distribution, with a mean time of 1.3 hours and a standard deviation of 1 hour. Answer the following questions, assuming that Gubser uses one welder to complete all jobs: What is the mean arrival rate in jobs per hour? If required, round your answer to two decimal places.fill in the blank 1 per hour What is the mean service rate in jobs per hour? If required, round your answer to four decimal places.fill in the blank 2 per hour What is the average number of jobs waiting for service? If required, round your answer to three decimal places.fill in the blank 3
Manufacture of a certain component requires three different machining operations. Machining time for each operation has a normal distribution, and the three times are independent of one another. The mean values are 20, 30, and 15 min, respectively, and the standard deviations are 1, 2, and 1.9 min, respectively. What is the probability that it takes at most 1 hour of machining time to produce a randomly selected component? (Round your answer to four decimal places.)
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 one job per 8-hour day. The time required to complete the jobs follows a normal probability distribution, with a mean time of 5.5 hours and a standard deviation of 2 hours. Answer the following questions, assuming that Gubser uses one welder to complete all jobs: What is the mean arrival rate in jobs per hour? If required, round your answer to two decimal places.fill in the blank 1 per hour What is the mean service rate in jobs per hour? If required, round your answer to four decimal places.fill in the blank 2 per hour What is the average number of jobs waiting for service? If required, round your answer to three decimal places.fill in the blank 3 What is the average time a job waits before the welder can begin working on it? If required, round your answer…
Consider two different workstations. Each workstation consists of machines A and B, respectively. Machine A has a mean effective process time of 1.0 hours and an c² of 0.25. Machine B has a mean effective process time of 0.85 hour and an c² of 4. Assume the part arrival and service processes follow a general distribution. 1 (a) For an arrival rate of 0.92 job per hour with c2 = 1, which machine will have a shorter average cycle time? (b) Now put one more machine of type A at the station and double the arrival rate (i.e., double the capacity and the throughput). What happens to cycle time?
The Riverton Police Department has eight patrol cars thatare on constant call 24 hours per day. A patrol car requires repairs every 30 days, on average, according to an exponen-tial distribution. When a patrol car is in need of repair it is driven into the motor pool, which has a repairperson on duty at all times. The average time required to repair a pa-trol car is 12 hours (exponentially distributed). Determine the average time a patrol car is not available for use and theaverage number of patrol cars out of service at any onetime, and indicate if the repair service seems adequate.
Do d
The Mountain Springs Water Company has two departments, Purifying and Bottling. The Bottling Department received 69,480 liters from the Purifying Department. During the period, the Bottling Department completed 66,940 liters, including 2,750 liters of work in process at the beginning of the period. The ending work in process was 5,290 liters. How many liters were started and completed during the period??????????????????????? liters started and completed
Solve the question below using the attached excel templates with formulas for renting both slow and fast copies (labeled in the excel tabs). Question: The Decision Sciences Department is trying to determine whether to rent a slow or a fast copier. The department believes that an employee’s time is worth $15 per hour. The slow copier rents for $4 per hour, and it takes an employee an average of 10 minutes to complete copying. The fast copier rents for $15 per hour, and it takes an employee an average of six minutes to complete copying. On average, four employees per hour need to use the copying machine. (Assume the copying times and interarrival times to the copying machine are exponentially distributed.) Which machine should the department rent to minimize expected total cost per hour?
Willow Brook National Bank operates a drive-up teller window that allows customers to complete bank transactions without getting out of their cars. On weekday mornings, arrivals to the drive-up teller window occur at random, with an arrival rate of 15 customers per hour or 0.25 customers per minute. Let's assume that the service times for the drive-up teller follow an exponential probability distribution with a service rate of 21 customers per hour, or 0.35 customers per minute. Determine the following operating characteristics for the system. (Round your answers to four decimal places.) (a) The probability that no customers are in the system (b) The average number of customers waiting (c) The average number of customers in the system (d) The average time (in min) a customer spends waiting min (e) The average time (in min) a customer spends in the system min (f) The probability that arriving customers will have to wait for service

SEE MORE QUESTIONS

Recommended textbooks for you

Practical Management Science

Operations Management

ISBN:

9781337406659

Author:

WINSTON, Wayne L.

Publisher:

Cengage,

Operations Management

ISBN:

9781259667473

Author:

William J Stevenson

Publisher:

McGraw-Hill Education

Operations and Supply Chain Management (Mcgraw-hi…

Operations Management

ISBN:

9781259666100

Author:

F. Robert Jacobs, Richard B Chase

Publisher:

McGraw-Hill Education

Practical Management Science

Operations Management

ISBN:

9781337406659

Author:

WINSTON, Wayne L.

Publisher:

Cengage,

Operations Management

ISBN:

9781259667473

Author:

William J Stevenson

Publisher:

McGraw-Hill Education

Operations and Supply Chain Management (Mcgraw-hi…

Operations Management

ISBN:

9781259666100

Author:

F. Robert Jacobs, Richard B Chase

Publisher:

McGraw-Hill Education

Business in Action

Operations Management

ISBN:

9780135198100

Author:

BOVEE

Publisher:

PEARSON CO

Purchasing and Supply Chain Management

Operations Management

ISBN:

9781285869681

Author:

Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson

Publisher:

Cengage Learning

Production and Operations Analysis, Seventh Editi…

Operations Management

ISBN:

9781478623069

Author:

Steven Nahmias, Tava Lennon Olsen

Publisher:

Waveland Press, Inc.

SEE MORE TEXTBOOKS