An operatlons consultant for an automaticcar wash wishes to plan for enough capacityto handle 60 cars per hour. Each car willhave wash time of 2 minutes, but there is tobe a 20 per centallowance for setup, delaysand payment transactions. The installationcapacity of car wash stalls should be

A Small Introduction about Operation Management Operations management (OM) is the organization of…

Answered: An operatlons consultant for an…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter12: Queueing Models

Section: Chapter Questions

Problem 59P

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9. Shouldice Hospital in Canada is widely known for one thing—hernia repair! In fact, that is the only operation it performs, and it performs a great many of them. Over the past two decades this small 90-bed hospital has averaged 7,000 operations annually. Last year, it had a record year and performed nearly 7,500 operations. A hernia repair operation at Shouldice Hospital is performed by one of the 12 full-time surgeons assisted by one of seven part-time assistant surgeons. The first operations begin at 7:30 AM each day, Monday through Friday. Surgeons generally take about one hour to prepare for and perform each hernia operation, and they operate on an average of at most four patients per day. This four patient per day limit on the average number of operations performed per surgeon has been found to be the best operating level for the hospital as it takes into account time the surgeons need for patient exams and consultations, updating medical charts, writing reports, traveling to…
IIn a job shop, effective capacity is only 69 percent of design capacity, and actual output is 76 percent of effective output. What design capacity would be needed to achieve an actual output of 13 jobs per week? What is its effective capacity? a. The Design Capacity needed to achieve the required actual job outputs =Blank 1 (round to whole number) b. The Effective Capacity needed to achieve the required actual job outputs = Blank 2 (round to whole number) Blank 1 Blank 2 Add your answer Add your answer
Please do not give solution in image formate thanku During the early morning hours, customers arrive at a branch post office at an average rate of 57 per hour (Poisson), while clerks can provide services at a rate of 19 per hour. If clerk cost is $50.14 per hour and customer waiting time represents a cost of $46 per hour, how many clerks can be justified on a cost basis a. 8 b. 4 c. 7 d. 6 e. 5
L. Winston Martin (an allergist) has an excellent system for handling his regular patientswho come in just for allergy injections. Patients arrive for an injection and i llout a name slip, which is then placed in an open slot that passes into another roomstaffed by one or two nurses. The specii c injections for a patient are prepared, andthe patient is called through a speaker system into the room to receive the injection.At certain times during the day, patient load drops and only one nurse is needed toadminister the injections.Let’s focus on the simpler case of the two—namely, when there is one nurse. Also,assume that patients arrive in a Poisson fashion and the service rate of the nurse is exponentiallydistributed. During this slower period, patients arrive with an interarrival time ofapproximately three minutes. It takes the nurse an average of two minutes to prepare thepatients’ serum and administer the injection.a. What is the average number you would expect to see in Dr.…
A milling department has 10 machines. Each operates an average of eight hours before requiring adjustment, which takes an average of 3.43 hours. While running, each machine can produce 50 pieces an hour. Use Table 1, Table 2 and Table 3. a. With one adjuster, what is the net average hourly output per machine? (Round your answer to 1 decimal place.) Number of Pieces ?? per machine b. If machine downtime cost is $75 per hour and adjuster cost is $31 per hour, how many adjusters would be optimal? Multiple Choice 1 2 3 4 5
Diagrams of two self-service gasoline stations, both locatedon corners, are shown in Figure 2.19(a) and (b). Both havetwo rows of four pumps and a booth at which an attendantreceives payment for the gasoline. At neither station is itnecessary for the customer to pay in advance. The exits andentrances are marked on the diagrams. Analyze the flows ofcars and people through each station.a. Which station has the more efficient flows from the standpoint of the customer?b. Which station is likely to lose more potential customerswho cannot gain access to the pumps because another caris headed in the other direction?c. At which station can a customer pay without getting out ofthe car?
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Melanie is the manager of the Clean Machine car washand has gathered the following information. Customers arriveat a rate of eight per hour according to a Poisson distribution.Th e car washer can service an average of ten cars per hour withservice times described by an exponential distribution. Melanie isconcerned about the number of customers waiting in line. She hasasked you to calculate the following system characteristics:(a) Average system utilization(b) Average number of customers in the system(c) Average number of customers waiting in line
The manager of a car wash must decide whether to have one or two wash lines. One line will mean a fixed cost of $6,000 a month, and two lines will mean a fixed cost of $10,500 a month. Each line would be able to process 15 cars an hour. Variable costs will be $3 per car, and revenue will be $5.95 per car. The manager projects an average demand of between 14 and 18 cars anhour. Would you recommend one or two lines? The car wash is open 300 hours a month.
er A product line includes 8 different product styles, each consisting of 93 components. Assume that 9 processing operations are needed to produce each component on average with each operation taking an average 1.2 min, which includes setup time and part handling time. All operations need a production machine, and currently 25 machines are dedicated to this task. The plant operates 52 hours per week, 52 weeks a year. Determine the yearly production of each style in units (round downward). 63 504
With a 10% availability buffer, a contact centre has been handling 900 consumers per day. Customers have shown dissatisfaction with the amount of time it takes for their call to be replied. How much additional space is needed if the call centre manager wishes to double the capacity cushion?

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An operatlons consultant for an automalic car wash wishes to plan for enough capacity co handle 60 cars per hour. Each car will nave wash time of 2 minutes, but there is to pe a 20 per centallowance for setup, delays end payment transactions. The installation