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business
operations management 6th

Questions and Answers of Operations Management 6th

CodeDeskInc matches programmers with freelance jobs. It has 30 employees who staff its online chat room. It receives, on average, 240 chat requests per hour, and the average chat session takes 5
Patients take a drug for severe acne for 6 months and there are 150,000 new patients each month. How many patients are taking this drug on average at any given time? LO.1
Last year, there were 3,400,000 visitors to a national park and, on average, each visitor spent 22 hours in the park. Last year, on average, how many visitors were in the park simultaneously? LO.1
One of the chair lifts at a ski resort unloads 1800 skiers per hour at the top of the slope.The ride from the bottom to the top takes 12 minutes. How many skiers are riding on the lift at any given
A computer server experiences large fluctuations in the amount of data requests it receives throughout the day. Because of this variation, Little’s Law does not apply. True or false? LO.1
Over the course of a day, fans pour into a NASCAR venue at the rate of 8000 people per hour. The average rate at which fans leave the venue _____.a. must be less than 8000 people per hourb. must be
It is election day and 1800 voters vote in their precinct’s library during the 10 hours the polls are open. On average, there are 15 voters in the library and they spend on average 5 minutes in the
At a cruise ship terminal, each day on average 1000 passengers embark on ships. On average, passengers spend 5 days on their cruise before returning to this terminal. If the flow unit is a passenger,
Over the course of a month, which of the following is most likely to describe an appropriate flow unit for a process analysis of a hospital?a. The number of physiciansb. The number of bedsc. The
From the perspective of process analysis, which of the following could be appropriate flow units for a hardware store?a. Number of workersb. Number of cash registersc. Number of customersd. Number of
Consider a process consisting of three resources. Assume there exists unlimited demand for the product.• Resource 1 has a processing time of 6 minutes per unit.• Resource 2 has a processing time
It takes a lawyer 120 minutes to serve one customer. Demand is 2 customers per eighthour day. The lawyer has a wage rate of $200 per hour. What is the cost of direct labor for the lawyer expressed in
When an operation improves its efficiency, its revenue will always stay constant, while its costs will go down. True or false?a. Trueb. False LO.1
A process has low fixed costs and high variable costs. It is currently capacityconstrained.Will the impact of an efficiency improvement be small or large?a. Smallb. Large LO.1
A process has high fixed costs and low variable costs. It is currently capacity-constrained.Will the impact of an efficiency improvement be small or large?a. Smallb. Large LO.1
Specialization typically lead to a higher average labor utilization. True or false?a. Trueb. False LO4-6 LO.1
Specialization increases the costs of labor because specialists will command a higher wage rate. True or false?a. Trueb. False LO.1
Balancing a process with a fixed sequence of activities will achieve a higher average labor utilization than balancing a process with no fixed sequence of activities. True or false?a. Trueb. False
It is possible to increase process capacity by balancing a process. True or false?a. Trueb. False LO.1
Which of the following actions does not relate to off-loading the bottleneck?a. Reassigning activities to other, nonbottleneck resourcesb. Automating some of the activities at the bottleneckc.
What happens to the target manpower if the labor content is doubled?a. The target manpower increases by 50 percent.b. The target manpower doubles.c. The target manpower decreases by 50 percent.d. The
If the takt time is shorter than the cycle time, the process needs to run faster. True or false?a. Trueb. False LO.1
The bottleneck resource in a process has the least idle time. True or false?a. Trueb. False LO4-2 LO.1
A group of workers works really hard. In fact, they work so hard that one of them claims to have an average labor utilization of 120 percent. Is that possible?a. Yesb. No LO.1
How many cars are you likely to encounter as work in progress inventory? LO.1
Where in the process do you expect to encounter inventory? LO.1
What is the flow time? LO.1
What is the cycle time of the process (assume two shifts of eight hours each and five days a week of operation)? LO.1
The local driver’s license center processes applications for driver’s license renewals through the following three steps. First, the customer registers with the receptionist, who updates the
An automated car wash serves customers with the following serial process: pre-treat, wash, rinse, wax, hand dry. Each of these steps is performed by a dedicated machine except for the hand-dry step,
Glenn Dental Clinic provides general dental care to residents of Philadelphia on a walkin basis. The clinic has started receiving complaints from patients that the waiting time is too long and has
A small, privately owned Asian company is producing a private-label soft drink called Yoggo. A bottling line puts the soft drinks into plastic bottles and then packages the bottles into boxes holding
A community health system’s nurse team consists of 12 nurses working in the local community. It takes a nurse 1.5 hours to complete one patient visit (including travel time and breaks).a. What is
Is the capacity of the bottleneck larger than, equal to, or smaller than the capacity of the process?a. Larger thanb. Equal toc. Smaller thand. The answer depends on the specific process under
What is the maximum utilization a resource can achieve?a. A value equal to the demandb. A value equal to the capacityc. There is no maximum utilization.d. 1.00 LO3-4 LO.1
You observe a long line at the airport security. The process currently is:a. capacity-constrained.b. demand-constrained.c. unconstrained.d. linearly constrained. LO.1
You are sitting in a restaurant and the waiter brings you the food you ordered a while ago. If you think about you being the flow unit in the process of the restaurant, which step of this process
Which of the following items would be considered resources in a restaurant?a. Recipesb. Foodc. Brand imaged. Chefs LO.1
Define shadow price (or dual value). lop4
Why is it not advisable to round optimal solutions to nearest integer? lop4
The Chris Beehner Company manufactures two lines of designer yard gates, called model A and model B. Every gate requires blending a certain amount of steel and zinc; the company has available a total
Solve the following linear program graphically: lop4 Minimize cost = X1 + X2 Subject to: 8X1 + 16X2 Ú 64 X1 Ú 0 X2 Ú 92(Note: X2 values can be negative in this problem.)
Develop an initial solution to a transportation model with the northwest-corner and intuitive lowest-cost methods 767
Solve a problem with the stepping-stone method 770
Balance a transportation problem 773
Deal with a problem that has degeneracy 773
What are the three information needs of the transportation model? ki7
What are the steps in the intuitive lowest-cost method? ki7
Identify the three “steps” in the northwest-corner rule. ki7
How do you know when an optimal solution has been reached? ki7
Which starting technique generally gives a better initial solution, and why? ki7
The more sources and destinations there are for a transportation problem, the smaller the percentage of all cells that will be used in the optimal solution. Explain. ki7
Develop a northeast-corner rule and explain how it would work. Set up an initial solution for the Arizona Plumbing problem analyzed in Example C1. ki7
What is meant by an unbalanced transportation problem, and how would you balance it? ki7
How many occupied cells must all solutions use? ki7
Explain the significance of a negative improvement index in a transportation-minimizing problem. ki7
How can the transportation method address production costs in addition to transportation costs? ki7
Explain what is meant by the term degeneracy within the context of transportation modeling. ki7
Find an initial solution to the following transportation problem. ki7 TO FROM LOS ANGELES CALGARY PANAMA CITY SUPPLY Mexico City $ 6 $18 $ 8 100 Detroit $17 $13 $19 60 Ottawa $20 $10 $24 40 Demand 50
Consider the transportation table at right. Unit costs for each shipping route are in dollars. What is the total cost of the basic feasible solution that the intuitive lowest-cost method would find
Consider the transportation table below. The solution displayed was obtained by performing some iterations of the transportation method on this problem. What is the current cost of the plan that
The following table is the result of one or more iterations.From To Demand AB C1 2 3 40 Capacity 50 30 75 60 55 155 10 20 30 10 30 30 45 40 10 30 10 10 25 5a) Complete the next iteration using the
A commercial bakery in Dubai has three production lines that supply baked goods to four stores. The cost of shipment from each production line to each store (in AED per 1,000 pieces)is shown in the
The Donna Mosier Clothing Group owns factories in three towns (W, Y, and Z), which distribute to three retail dress shops in three other cities (A, B, and C). The following table summarizes factory
An equipment manufacturer wants to decide on the location of a new facility. Currently, the company has a plant in Egypt and a plant in Turkey. The company is deciding where to build a new
Randa’s Bakery, Egypt, is considering adding a fourth plant to its three existing facilities in 6th of October, 10th of Ramadan, and Obour. Both Giza and Mokatam are being considered. Evaluating
Using the data from Problem C.10 and the unit production costs listed in the following table, show which locations yield the lowest cost. ki7 LOCATION PRODUCTION COST(E£/UNIT)6th of October E£2.9
A juice manufacturer produces juice at plants in Cairo, Alexandria, and Aswan. These are sent to regional distributors in Giza, Tanta, and Sohag. The shipping costs vary, and the company would like
For the following Gregory Bier Corp. data, find the starting solution and initial cost using the northwest-corner method. What must you do to balance this problem? ki7 TO FROM W X Y Z SUPPLY A $132
The following table presents cost, capacity, and demand data for a transportation problem in Jinfeng Yue’s furniture company. Set up the appropriate transportation table and find the initial
With the transportation technique, the initial solution can be generated in any fashion one chooses. The only restriction(s)is that:a) the solution be optimal.b) one use the northwest-corner
The purpose of the stepping-stone method is to:a) develop the initial solution to a transportation problem.b) identify the relevant costs in a transportation problem.c) determine whether a given
The purpose of a dummy source or a dummy destination in a transportation problem is to:a) provide a means of representing a dummy problem.b) obtain a balance between total supply and total demand.c)
If a solution to a transportation problem is degenerate, then:a) it will be impossible to evaluate all empty cells without removing the degeneracy.b) a dummy row or column must be added.c) there will
How much would reliability improve if the medical control system shown in Problem 17.9 changed to the redundant parallel system shown in Problem 17.10? L01
Elizabeth Irwin’s design team has proposed the following system with component reliabilities as indicated:What is the reliability of the system?Hint: The system functions if either R2 or R3 work.
As VP for operations at Méndez-Piñero Engineering, you must decide which product design, A or B, has the higher reliability. B is designed with backup units for components R3 and R4.What is the
Explain the relationship among short-term scheduling, capacity planning, aggregate planning, and a master schedule 639
Draw Gantt loading and scheduling charts 643
Name and describe each of the priority sequencing rules 649
Use Johnson’s rule 652
An Alabama lumberyard has four jobs on order, as shown in the following table. Today is day 205 on the yard’s schedule.JOB DUE DATE REMAINING TIME (DAYS)A 212 6 B 209 3 C 208 3 D 210 8 In what
Yu Amy Xia has developed a specialized airtight vacuum bag to extend the freshness of seafood shipped to restaurants. She has put together the following demand cost data:QUARTER FORECAST
Consider the following aggregate planning problem for one quarter:REGULAR TIME OVERTIME SUBCONTRACTING Production capacity/month 1,000 200 150 Production cost/unit $5 $7 $8 Assume that there is no
Revenue management requires management to deal with:a) multiple pricing structures.b) changes in demand.c) forecasts of use.d) forecasts of duration of use.e) all of the above. lop52
Describe causes of the bullwhip effect and their associated remedies. lop6
Sean Willems has evaluated the vendors in Table S11.3 as well as Fricker V-Tech, the vendor in Problem S11.13, but the Quality Control Manager says that new data suggest that Siemsen Systems,
The Smoked Salmon, a seafood supplier in Egypt, has a new yearly contract to supply fresh seafood products to Saudi Arabia. The value of the contract is E£800,000 (Egyptian Pound)and the estimated
The food items listed in the following table are stored on a cruise ship for a 7-day cruise.ITEM TRIPS PER VOYAGE AREA NEEDED (BLOCKS)A 2 1 B 160 8 C 16 1 D 40 4 E 24 2 F 15 1 G 4 1 Using the
Explain the strategic importance of the supply chain 477
Identify six sourcing strategies 479
Explain issues and opportunities in the supply chain 483
Describe the steps in supplier selection 485
Explain major issues in logistics management 488
Compute the percentage of assets committed to inventory and inventory turnover 492
Define supply chain management. lop5
What are the objectives of supply chain management? lop5
What is the objective of logistics management? lop5
How do we distinguish between the types of risk in the supply chain? lop5
What is vertical integration? Give examples of backward and forward integration. lop5

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