Question: The Scott Corey accounting firm is installing

> The campaign manager for a politician who is running for reelection to a political office is planning the campaign. Four ways to advertise have been selected: TV ads, radio ads, billboards, and social media advertising buys. The costs of these are $900 f

> Triangle Utilities provides electricity for three cities. The company has four electric generators that are used to provide electricity. The main generator operates 24 hours per day, with an occasional shutdown for routine maintenance. Three other genera

> A real estate developer is considering three possible projects: a small apartment complex, a small shopping center, and a mini-warehouse. Each of these requires different funding over the next 2 years, and the net present values of the investments also v

> Innis Construction Company specializes in building moderately priced homes in Cincinnati, Ohio. Tom Innis has identified eight potential locations to construct new single-family dwellings, but he cannot put up homes on all of the sites because he has onl

> Horizon Wireless, a cellular telephone company, is expanding into a new era. Relay towers are necessary to provide wireless telephone coverage to the different areas of the city. A grid is superimposed on a map of the city to help determine where the tow

> An airline owns an aging fleet of Boeing 737 jet airplanes. It is considering a major purchase of up to 17 new Boeing model 787 and 767 jets. The decision must take into account numerous cost and capability factors, including the following: (1) the air

> Student Enterprises sells two sizes of wall posters, a large 3- by 4-foot poster and a smaller 2- by 3-foot poster. The profit earned from the sale of each large poster is $3; each smaller poster earns $2. The firm, although profitable, is not large; it

> What are the earliest activity start time and latest activity start time? How are they computed?

> A group of college students is planning a camping trip during the upcoming break. The group must hike several miles through the woods to get to the campsite, and anything that is needed on this trip must be packed in a knapsack and carried to the campsit

> Elizabeth Bailey is the owner and general manager of Princess Brides, which provides a wedding planning service in southwestern Louisiana. She uses radio advertising to market her business. Two types of ads are available—those during prime-time hours and

> Hard rock Concrete’s owner has decided to increase the capacity at his smallest plant (see Problem 9.8). Instead of producing 30 loads of concrete per day at plant 3, that plant’s capacity has been doubled to 60 loads.

> The Hard rock Concrete Company has plants in three locations and is currently working on three major construction projects, each located at a different site. The shipping cost per truckload of concrete, daily plant capacities, and daily project require

> The management of the Executive Furniture Corporation decided to expand the production capacity at its Des Moines factory and to cut back the production capacities at its other two factories. It also recognizes a shifting market for its desks and revises

> Four automobiles have entered Bubba’s Repair Shop for various types of work, ranging from a transmission overhaul to a brake job. The experience level of the mechanics is quite varied, and Bubba would like to minimize the time required to complete all of

> In a job shop operation, four jobs may be performed on any of four machines. The hours required for each job on each machine are presented in the following table. The plant supervisor would like to assign jobs so that total time is minimized. Find the be

> Using the data from Problem 9-20 plus the unit production costs shown in the following table, which locations yield the lowest cost? LOCATION PRODUCTION COSTS Decatur …………

> Don Levine Corporation is considering adding an additional plant to its three existing facilities in Decatur, Minneapolis, and Carbondale. Both St. Louis and East St. Louis are being considered. Evaluating only the transportation costs per unit, as shown

> Marc Smith, vice president for operations of HHN, Inc., a manufacturer of cabinets for telephone switches, is constrained from meeting the 5-year forecast by limited capacity at the existing three plants. These three plants are Waterloo, Pusan, and Bogot

> Briefly discuss what is meant by critical path analysis. What are critical path activities, and why are they important?

> Ashley’s Auto Top Carriers currently maintains plants in Atlanta and Tulsa that supply major distribution centers in Los Angeles and New York. Because of an expanding demand, Ashley has decided to open a third plant and has narrowed the

> The J. Mehta Company’s production manager is planning for a series of 1-month production periods for stainless steel sinks. The demand for the next 4 months is as follows: MONTH DEMAND FOR STAINLESS STEEL SINKS 1 ……………………………………………………… 120 2 ………………………………

> The B. Hall Real Estate Investment Corporation has identified four small apartment buildings in which it would like to invest. Mrs. Hall has approached three savings and loan companies regarding financing. Because Hall has been a good client in the past

> The three blood banks in Franklin County are coordinated through a central office that facilitates blood delivery to four hospitals in the region. The cost to ship a standard container of blood from each bank to each hospital is shown in the table on thi

> The state of Missouri has three major power-generating companies (A, B, and C). During the months of peak demand, the Missouri Power Authority authorizes these companies to pool their excess supply and to distribute it to smaller, independent power compa

> Finnish Furniture manufactures tables in facilities located in three cities—Reno, Denver, and Pittsburgh. The tables are then shipped to three retail stores located in Phoenix, Cleveland, and Chicago. Management wishes to develop a dist

> Northwest University is in the process of completing a computer bus network that will connect computer facilities throughout the university. The prime objective is to string a main cable from one end of the campus to the other (nodes 1–

> An air-conditioning manufacturer produces room air conditioners at plants in Houston, Phoenix, and Memphis. These are sent to regional distributors in Dallas, Atlanta, and Denver. The shipping costs vary, and the company would like to find the least-cost

> South Side Oil and Gas, a new venture in Texas, has developed an oil pipeline network to transport oil from exploration fields to the refinery and other locations. There are 10 pipelines (branches) in the network. The oil flow in hundreds of gallons and

> The Oakton River had long been considered an impediment to the development of a certain medium-sized metropolitan area in the Southeast. Lying to the east of the city, the river made it difficult for people living on its eastern bank to commute to jobs i

> For more than 75 years, New England Foundry, Inc., has manufactured wood stoves for home use. In recent years, with increasing energy prices, George Mathison, president of New England Foundry, has seen sales triple. This dramatic increase in sales has ma

> Northeastern Airlines is a regional airline serving nine cities in the New England states, as well as cities in New York, New Jersey, and Pennsylvania. While nonstop flights are available for some of the routes, connecting flights are often necessary. Th

> FB Badpoore Aerospace makes carbon brake discs for large airplanes with a proprietary “cross weave” of the carbon fibers. The brake discs are 4 feet in diameter but weigh significantly less than conventional ceramic br

> Dr. Adinombe Watage, deputy director of the Family Planning Research Center in Nigeria’s Over-the-River Province, was assigned the task of organizing and training five teams of field workers to perform educational and outreach activitie

> What are some of the questions that can be answered with PERT and CPM?

> A linear programming problem was developed, and the feasible region was found. If the additional restriction that all variables must be integers were added to the problem, how would the size of the feasible region change? How would the optimal value of t

> Explain how to determine the number of variables and constraints in a transportation problem when only the number of sources and the number of destinations are known.

> Is the transportation model an example of decision making under certainty or decision making under uncertainty? Why?

> Explain why a process can be out of control even though all the samples fall within the upper and lower control limits.

> When using a control chart, what are some patterns that would indicate that the process is out of control?

> Explain the difference between c-charts and p-charts.

> With the company expanding into several new markets in the coming months, Cable & Moore was anticipating a large increase in sales revenue. The future looked bright for this provider of television, telephone, and Internet services. However, managemen

> Explain the difference between control charts for variables and control charts for attributes.

> What is an absorbing state? Give several examples of absorbing states.

> What is an equilibrium condition? How do we know that we have an equilibrium condition, and how can we compute equilibrium conditions given the matrix of transition probabilities?

> Describe how we can use Markov analysis to make future predictions.

> What are the vector of state probabilities and the matrix of transition probabilities, and how can they be determined?

> List the assumptions that are made in Markov analysis.

> Give two examples of random variables that would be continuous and give two examples of random variables that would be discrete.

> Why might a manager be forced to use simulation instead of an analytical model in dealing with a problem of (a). inventory ordering policy? (b). ships docking in a port to unload? (c). bank teller service windows? (d). the U.S. economy?

> What might cause a process to be out of control?

> Why is the central limit theorem so important in quality control?

> What is the fundamental matrix, and how is it used in determining equilibrium conditions?

> In the simulation of an order policy for drills at Simkin’s Hardware, would the results (Table 13.8) change significantly if a longer period were simulated? Why is the 10-day simulation valid or invalid? Table 13.8: ORDER QUANTITY

> Discuss the concepts of verification and validation in simulation.

> What types of management problems can be solved more easily by quantitative analysis techniques other than simulation?

> List five of the simulation software tools that are available today.

> What is operational gaming? What is systems simulation? Give examples of how each may be applied.

> Do you think the application of simulation will increase strongly in the next 10 years? Why or why not?

> Why must the service rate be greater than the arrival rate in a single-channel queuing system?

> Describe how expected activity times and variances can be computed in a PERT network.

> What is an activity? What is an event? What is an immediate predecessor?

> Why is linear programming useful in CPM crashing?

> What are deviational variables? How do they differ from decision variables in traditional LP problems?

> What is meant by satisficing, and why is the term often used in conjunction with goal programming?

> What does it mean to rank goals in goal programming? How does this affect the problem’s solution?

> List the advantages and disadvantages of solving integer programming problems by (a) rounding off and (b) enumeration.

> Explain how the maximal-flow model might be viewed as a transshipment model.

> Describe a problem that can be solved by using the shortest-route model.

> Why is a computer necessary in conducting a real world simulation?

> Andrew–Carter, Inc. (A–C), is a major Canadian producer and distributor of outdoor lighting fixtures. Its fixture is distributed throughout North America and has been in high demand for several years. The company opera

> Explain the purpose of the transshipment constraints in the linear program for a transshipment model.

> Explain what it means for an assignment model to be balanced.

> What is the waiting line problem? What are the components in a waiting line system?

> Compare the similarities and differences of linear and goal programming.

> Donna Shader, manager of the Winter Park Hotel, is considering how to restructure the front desk to reach an optimum level of staff efficiency and guest service. At present, the hotel has five clerks on duty, each with a separate waiting line, during the

> Statewide Development Corporation has built a very large apartment complex in Gainesville, Florida. As part of the student- oriented marketing strategy that has been developed, it is stated that if any problems with plumbing or air conditioning are exper

> Southwestern University (SWU), located in the small town of Stephenville, Texas, is experiencing increased interest in its football program now that a big-name coach has been hired. The increase in season ticket sales for the upcoming season means additi

> After six months of study, much political arm wrestling, and some serious financial analysis, Dr. Martin Starr, president of Southwestern University, had reached a decision. To the delight of its students and to the disappointment of its athletic booster

> Schank Marketing Research has just signed contracts to conduct studies for four clients. At present, three project managers are free for assignment to the tasks. Although all are capable of handling each assignment, the times and cost to complete the stu

> Jim Fox, an executive for Rentall Trucks, could not believe it. He had hired one of the town’s best law firms, Folley, Smith, and Christensen. Their fee for drawing up the legal contracts was over $50,000. Folley, Smith, and Christensen had omitted one i

> What are the advantages and limitations of simulation models?

> In going from Quincy to Old Bainbridge, there are 10 possible roads that George Olin can take. Each road can be considered a branch in the shortest-route problem. (a). Using the following table, determine the route from Quincy (node 1) to Old Bainbridge

> Grey Construction would like to determine the least expensive way of connecting houses it is building with cable TV. It has identified 11 possible branches or routes that could be used to connect the houses. The cost in hundreds of dollars and the branch

> The German towns around the Black Forest are represented by nodes in the network below. The distances between towns are shown in kilometers. Find the shortest route from city 1 to city 16. If flooding in cities 7 and 8 forces closure of all roads leading

> The numbers in the network below represent thousands of gallons per hour as they flow through a chemical processing plant. Two terminals in the chemical processing plant, represented by nodes 6 and 7, have had problems recently, and repairs on these are

> The road system between the hotel complex on International Drive (node 1) and Disney World (node 11) in Orlando, Florida, is shown in the network below. The numbers by the nodes represent the traffic flow in hundreds of cars per hour. What is the maximum

> The Krampf Lines Railway Company specializes in coal handling. On Friday, April 13, Krampf had empty cars at the following towns in the quantities indicated: TOWN SUPPLY OF CARS Morgantown ……â€&brvbar

> The city of New Berlin is considering making several of its streets one-way (see the network on this page). Also, due to increased property taxes and an aggressive road development plan, the city of New Berlin has been considering increasing the road cap

> Bechtold Construction is in the process of installing power lines to a large housing development. Steve Bechtold wants to minimize the total length of wire used, which will minimize his costs. The housing development is shown as a network on this page. E

> The Saussy Lumber Company ships pine flooring to three building-supply houses from its mills in Pineville, Oak Ridge, and Mapletown. Determine the best transportation schedule for the data given in the table on this page. TO SUPPLY SUPPLY SUPPLY MILL

> NASA’s astronaut crew currently includes 10 mission specialists who hold a doctoral degree in either astrophysics or astromedicine. One of these specialists will be assigned to each of the 10 f lights scheduled for the upcoming nine mon

> Do you think the Poisson distribution, which assumes independent arrivals, is a good estimation of arrival rates in the following queuing systems? Defend your position in each case. (a). Cafeteria in your school (b). Barbershop (c). Hardware store (d).

> Haifa Instruments, an Israeli producer of portable kidney dialysis units and other medical products, develops an 8-month aggregate plan. Demand and capacity (in units) are forecast as shown in the table on this page. The cost of producing each dialysis u

> The Patricia Garcia Company is producing seven new medical products. Each of Garcia’s eight plants can add one more product to its current line of medical devices. The unit manufacturing costs for producing the different parts at the ei

> The Gleaming Company has just developed a new dishwashing liquid and is preparing for a national television promotional campaign. The firm has decided to schedule a series of 1-minute commercials during the peak homemaker audience viewing hours of 1 p.m.

> The hospital administrator at St. Charles General must appoint head nurses to four newly established departments: urology, cardiology, orthopedics, and obstetrics. In anticipation of this staffing problem, she had hired four nurses: Hawkins, Condriac, Ba

> Roscoe Davis, chairman of a college’s business department, has decided to apply a new method in assigning professors to courses next semester. As a criterion for judging who should teach each course, Professor Davis reviews the past two

> In Problem 9-24, the minimum travel distance was found. To see how much better this solution is than the assignments that might have been made, find the assignments that would give the maximum distance traveled. Compare this total distance with the dista

> Baseball umpiring crews are currently in four cities where three-game series are beginning. When these are finished, the crews are needed to work games in four different cities. The distances (miles) from each of the cities where the crews are currently

> Coast-to-Coast Airlines is investigating the possibility of reducing the cost of fuel purchases by taking advantage of lower fuel costs in certain cities. Since fuel purchases represent a substantial portion of operating expenses for an airline, it is im