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business
operations management

Questions and Answers of Operations Management

Refer to Solved Problem 4.1.a) Using the trend projection (regression) method, develop a forecast for the sales of Volkswagen Beetles in Nevada through year 6.b) What is the MAD?c) What is the MSE?
Refer to Solved Problem 4.1 on page 138.a) Use a 3-year moving average to forecast the sales of Volkswagen Beetles in Nevada through year 6.b) What is the MAD?c) What is the MSE?
Use exponential smoothing with a smoothing constant of 0.3 to forecast the registrations at the seminar given in Problem 4.10. To begin the procedure, assume that the forecast for year 1 was 5,000
The following gives the number of pints of type B blood used at Woodlawn Hospital in the past 6 weeks:
The following gives the number of pints of type B blood used at Woodlawn Hospital in the past 6 weeks:
Southwestem University (SWU), a large state college in Stephenville, Texas, 30 miles southwest of the Dallas/Fort Worth metroplex, enrolls close to 20,000 students. In a typical town-gown
Using AOA, diagram the network described below for Lillian Fok's construction project. Calculate its critical path. How long is the minimum duration of this network?
The text provides three primary strategic approaches (differentiation, cost, and response) for achieving competitive advantage. Provide an example of each not given in the text. Support your choices.
The text provides three primary strategic approaches (differentiation, cost, and response) for achieving competitive advantage. Provide an example of each not given in the text. Support your choices.
What global operations strategy is most descriptive of McDonald's?
Given in the discussion of Southwest Airlines in the text, define an operation strategy for that firm now that it has purchased AirTran
Define strategy.
Hard Rock brings the concept of the "experience economy" to its cafe operation. The strategy incorporates a unique "experience" into its operations. This innovation is somewhat akin to mass
Regal Marine, one of the U.S.'s 10 largest power-boat manufacturers, achieves its mission providing luxury performance boats to custom- ers worldwide-using the strategy of differentiation. It
As a manufacturer of athletic shoes whose image-indeedperformance is widely regarded as socially responsible, you findyour costs increasing. Traditionally, your athletic shoes have beenmade in
In its 42 years of existence, Hard Rock has grown from a modest London pub to a global power managing 150 cafes, 13 hotels/casinos, and live music venues. This puts Hard Rock firmly in the service
Briefly describe the contributions of the four individuals identified in the preceding question.
Newmarket International Manufacturing Company (NIMCO) was founded by Marcia Blakely only two years after leaving graduate school. Her knowledge of mass customization was the driving force behind
WAI, the company in Problem 8, has received the following additional customer orders shown here. You must determine which of the orders the company can accept. If the company must reject any orders,
WAI knows from historical records that approximately 40 percent of its labor is used in Department 101 and 60 percent is used in Department 102. The reverse is true of machine time; 60 percent is
WAI uses two resources for each product that it builds: direct labor and machine time. From historical records,WAI calculates the following planning factors:Direct labor for standard corkscrew is
DDKC has decided to change its replenishment policy. Instead of producing 72 or 120 kites each order, DDKC has reduced its MPS order quantity to 48 kites.(a) Develop an MPS using 48 kites as the
In an effort to reduce setup frequency, DDKC has decided to use an MPS order quantity of 120 kites. (See Problem 1 for data.)(a) Prepare the MPS using the new order quantity.(b) Calculate the ending
David’s Delightful Kites Company (DDKC) manufactures kites. The most popular is David’s Daredevil model. Demand management has prepared forecast estimates for the next six weeks. Beginning
Discuss how the MPS might be used in a service organization.
Discuss how the MPS might be used in a service organization.
Explain the changes you can make in the slushy portion of the MPS and who authorizes such changes.
Explain the changes you can make in the frozen portion of the MPS and who must authorize such changes.
Describe the role of time fence policies.
Explain the importance of rough-cut capacity planning in the MPS process.
Explain the process of developing an authorized MPS.
Discuss the objectives of the master scheduler and how they influence master scheduling decisions.
Describe the different sources of demand.
Describe the inputs needed to do master production scheduling.
Visit a local business and learn how it calculates its resources.
Melanie is very concerned about the number of customers waiting in line. Given the information in Problem 7, calculate how high the customer arrival rate can increase without the average number of
Business continues to grow at Clean Machine. Melanie has decided to use a second car washing bay, staffed with another identical two-person team. Clean Machine will now use a single-line,
As usual, Melanie then requested you to calculate system characteristics concerning customer time spent in the system.(a) Calculate the average time a customer spends in the system.(b) Calculate the
After Melanie added another car washer at Clean Machine (service rate is an average of 16 customers per hour), business improved. Melanie now estimates that the arrival rate is 12 customers per hour.
Melanie is curious to see the difference in waiting times for customers caused by the additional server added in Problem 3. Calculate the following system characteristics for her:(a) The average time
If Melanie adds an additional server at Clean Machine car wash, the service rate changes to an average of 16 cars per hour. The customer arrival rate is 10 cars per hour. Melanie has asked you to
If Melanie adds an additional server at Clean Machine car wash, the service rate changes to an average of 16 cars per hour. The customer arrival rate is 10 cars per hour. Melanie has asked you to
Melanie realizes that how long the customer must wait is also very important. She is also concerned about customers balking when the waiting line is too long. Using the arrival and service rates in
Melanie is the manager of the Clean Machine car wash and has gathered the following information. Customers arrive at a rate of eight per hour according to a Poisson distribution. The car washer can
Describe any disadvantages of using waiting line models.
On your next trip to the Division of Motor Vehicles, evaluate its waiting line system.
Visit your local bank and observe the waiting line system. Describe the system in terms of number of lines, number of facilities, and number of phases.
Explain how the design of a waiting system can negatively affect customers.
Describe a situation in your daily life that could be improved by waiting line analysis.
Describe the implications for customer service and server skills when a multiserver, multistage waiting line system is used.
Describe the implications for customer service and server skills when using a single-line, multiserver, single-phase waiting line system.
Describe the implications for customer service and server skills when using a single-line, single-server, single-phase waiting line system.
Describe the operating performance characteristics calculated for evaluating waiting line systems.
Provide examples of when a single-line, single-server, single-phase waiting line system is appropriate.
Describe the elements of a waiting line system.
A1 Credit provides credit information to its customers throughout the country, 24 hours per day. Credit representatives answer customer calls and provide information. Based on demand patterns, the
Northwest Pipe (NP) makes water pipe. NP is planning production for the next seven months,March through September. The forecast demands (in thousands of feet) are, respectively, 40, 60, 70, 80, 90,
FiberTech makes newsprint for newspapers at three mills, A, B, and C. The cost of producing newsprint is estimated to be $210 at mill A, $225 at B, and $220 at C. Five primary geographical markets
A company has three manufacturing plants (in Atlanta, Tulsa, and Springfield) that produce a product that is then shipped to one of four distribution centers. The three plants can produce 13, 18, and
Montana Pulp (MP) produces recycled paperboard by combining four grades of recycled paper stock. Each grade of stock has a different strength, color, and texture. The strength, color, and texture of
DynaTune is trying to determine how to allocate its $145,000 advertising budget for a new product. Radio and television are the two media outlets selected for advertising. The following table shows
Why is it important to conduct sensitivity analysis after solving an optimization problem?
Explain the meaning of binding and nonbinding constraints.
When specifying the Target Cell, Changing Cells, and Constraints to Solver, why is it important to use only cell references rather than fixed numbers?
Think of a company you are familiar with. Describe at least three problems the company faces that could be addressed, at least in part, through optimization. The problems can be either strategic or
Describe a recent decision you made that could be viewed from an optimization perspective. In a few words, what were the “decision variables”? What was the objective? What were the constraints?
What are the three main elements of an optimization problem? Give an example of each.
When are tables of numbers useful in the decision-making process? When are graphs of those numbers useful?
Why is it important to use absolute and relative cell references?
What are absolute and relative cell references?
Give an example (besides the one used in the text) of when using a Data Table would be helpful.
Give an example (besides the one used in the text) of when using Goal Seek would be helpful.
Explain the steps of the spreadsheet modeling process.
Discuss the importance of a model being well documented.
Discuss the importance of model flexibility.
Give an example of a decision-making situation in which you used a mathematical or spreadsheet model.
Give an example of a decision-making situation in which you used a mental model.
Give an example (besides the ones noted in the text) of a mental model, a visual model, and a mathematical or spreadsheet model.
Your Internet challenge is to help plan the 50th wedding anniversary party described at the beginning of this chapter. Use the list of activities that were identified for the party preparation and
CII wants to launch a new onboard telemedicine procedure, and the project is time-critical. You need to provide project management assistance to Susan Petersen in CII’s marketing department as well
Two professors of operations management, Susan and Chris, have decided to write a new textbook for use in the undergraduate introductory operations management course. As they discuss the project,
Using the information given, calculate the replenishment time when no beginning inventory exists.
As a world-class fan of major league baseball, you have always wanted to watch a game in person at each of the ballparks across the country. Now that you are about to graduate, you have decided it is
You are meeting with Wilhelm Schmidt, the Cruise Ship First Engineer, to help him with a maintenance scheduling problem. He needs help in assigning each of the six maintenance workers to specific
Your university’s Department of Hospitality Management hosts several gourmet dinners throughout the year. To show how OM concepts are useful in the service industry, the department has asked you to
Bob Bristol wants you to examine the possible benefits from implementing an ERP system. Since planning and coordination of a wide range of resources is critical to CII, Bob believes that an ERP
Jay Brown (J.B. to his friends) is a student at the Northwest Culinary Institute and specializes in preparing elaborate desserts. After graduation, J.B. wants to open up a bakery. The bakery,
Aggregate planning identifies the resources needed by operations during a specified time period. Once these resources have been authorized, operations must make do or justify any deviations from the
You are meeting today with Monita Terazzi, the Head of Housekeeping. She wants you to help her develop an 18-month staffing plan for the floor supervisors, head room supervisors, cabin stewards/
Marcia Blakely, plant manager at the Newmarket International Manufacturing Company (NIMCO), was preparing for a meeting with her management team. Joining her would be Jack Novak, the company
Describe the different sources of demand.
Visit a local business and learn how it calculates its resources.
Your nonprofit club holds a major fund-raiser for two weeks each year to support community improvement projects. The club sells packages of cookies throughout the community and donates the proceeds.
In this assignment you will work with Andrew Jaworski, the cruise ship’s Medical Officer. He has a special offer from a supplier for a disposable syringe filled with a premeasured dosage of
You have been chosen to head up the development of an e-commerce direct retail site for your company. Since this is new to both you and your company, you need to gather some initial information. You
You have been asked to work with Monita Terazzi, the head of Housekeeping Services. She is concerned about the high turnover rate among cabin stewards/stewardesses within her department. Currently,
The law firm of DJ and Associates has just moved into a new facility. The spacious reception space has room for three receptionists and a client waiting area. The law firm has hired you to help with
Your next assignment will be with the Cruise Director, Jacqueline Downs. She is concerned that passengers start their cruise vacation in a good frame of mind. Therefore, she is quite concerned about
EDS is a national distributor of office supplies that delivers goods to department and specialty stores. It is planning to build a large distribution center in your state and is analyzing different
Bob Bristol just called to congratulate you on your excellent work on the various assignments at CII.He now wants you to do some capacity analysis for Meghan Willoughby, the Chief Purser. Meghan is

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