Question: Classify the cost elements shown below for

> Suppose that some of the activities in the Environment Recycling, Inc. project (problem 40) can be crashed. The table below shows the crash times and costs associated with performing the activities at their original (normal) times and also for the crash

> You are in charge of the purchasing, installing, and testing a new 30-ton stamping machine for a major automobile assembly line. It stamps out metal fenders and hoods for vehicles prior to painting them. The goal is to complete the project on time and wi

> Hello, is this the investment management help desk?” said a tired voice on the other end of the telephone line at 7:42 a.m. “Yes, how can I help you?” said Thomas Bourbon, customer service representat

> Office Automation, Inc. has developed a proposal for introducing a new computerized office system that will improve word processing and interoffice communications for a particular company. Contained in the proposal is a list of activities that must be ac

> You are a marketing major and have been working at a major consumer products company for the past three years. Today, your boss walked into your office and said, “Polly, I want you to be the Project Leader for our launch of Perfect Clea

> You have collected the information in the table below for the project you are leading on web page design and development. The times are in weeks. a. What is the total time of this project? b. What is the total normal cost of the project? c. If you need t

> You are assigned your first project and if things go well you should get promoted. The CEO is aware of this project, so you have a chance for high visibility. You want to do a good job! Your first task is to define the work break down structure by interv

> Two international banks are integrating two financial processing software systems as a result of their merger. Preliminary analysis and interviews with all parties involved resulted in the following project information. The “systems int

> Rozales Manufacturing Co. is planning to install a new flexible manufacturing system. The activities that must be performed, their immediate predecessors, and estimated activity times are shown below. Draw the project network and find the critical path c

> Environment Recycling, Inc. must clean up a large automobile tire dump under a state environmental cleanup contract. The tasks, durations (in weeks), costs, and predecessor relationships are shown as follows: a. Draw the project network. b. Identify the

> A computer-system installation project consists of eight activities. The immediate predecessors and activity times in weeks are shown below. a. Draw the network for this project. b. Identify the critical path(s). c. What is the project completion time?

> Colonial State College is considering building a new athletic complex on campus. The complex would provide a new gymnasium for intercollegiate basketball games, expanded office space, classrooms, and intramural facilities. The activities that would have

> A computer-system installation project consists of eight activities. The immediate predecessors and activity times in weeks are shown below. a. Draw the network for this project. b. Identify the critical path(s). c. What is the project completion time? d

> United Dairies, Inc. supplies milk to independent grocers in Collier County, Florida. Milk is perishable so forecast accuracy is critical in predicting the number of gallons of milk sold per month. Sales data in gallons for the past twelve months is show

> Mary is planning her wedding and develops the following preliminary information. a. Draw the network for this project. b. Identify the critical path(s)? c. What is the project completion time? d. Construct an early start date Gantt chart. e. As a project

> You are in charge of the advertising program for the Boston Red Sox baseball team during their spring training season in Fort Myers, Florida. You have defined the advertising program as a project with the following characteristics. The goal is to fill al

> You are in charge of a new initial public offering (IPO) on the NASDAQ stock exchange for a major bank. You have defined the project with the follow- ing characteristics. You expect to be promoted if this project and offering goes well. a. Draw the proje

> Construct a project network for the activities listed below. Do not attempt to perform any further analysis.

> The Mohawk Discount Store chain is designing a management-training program for individuals at its corporate headquarters. The company would like to design the program so that the trainees can complete it as quickly as possible. There are important preced

> The county government has decided to redo the street you live on and plans to block the street off, which causes you and your neighbors considerable inconvenience. The project has three parallel paths defined as follows: (i) path A-B-C-H to install stre

> A pillow assembly line consists of five stages arranged in series. The first workstation stuffs the pillow with filler material. The second workstation sews the pillow case and the third stage places the pillow in a clear plastic sleeve. The fourth works

> An automobile transmission manufacturer is considering using a JIT approach to replenishing its stock of transmissions. Daily demand for transmission #230 is 55 transmissions per day and they are built in groups of six transmissions. Total assembly and w

> Due to rapid changes in technology, a telecommunications manufacturer decides to produce a router using JIT methods. Daily demand for the router is 17 units per day. The routers are built on racks that hold four at a time (i.e., the container size). Tota

> Lou’s Bakery has established that JIT should be used for chocolate chips due to the high probability of the kitchen heat melting the chips. The average demand is 150 cups of chocolate chips per week. The average setup and processing time is ¼ day. Each c

> The Hudson Jewelers case study available in MindTap integrates material found in each chapter of this book. Case Question for Discussion: 1. Design and draw the layout for your high-end jewelry store. Critique its strengths and weaknesses. (Make use of c

> Tooltron Manufacturing uses a Kanban system for a component. Daily demand is 425 units. Each container has a combined waiting and processing time of 1.5 days. If the container size is 35 and the alpha value (a) is 12 percent, how many Kanban card sets sh

> Bracket Manufacturing uses a Kanban system for a component. Daily demand is 1,000 units. Each container has a combined waiting and processing time of .85 days. If the container size is 70 and the alpha value (a) is 13%, how many Kanban card sets should b

> A plastic injection molding machine operates 348 days a year. It is the bottleneck workstation in a process that produces plastic housed wall clocks. Industrial engineers collected data on the probability of machine breakdowns, the costs of preventive ma

> A Florida lottery machine and printer at Store #8302 operates 360 days a year. If the machine does not work and breaks down, it costs the Florida Lottery Commission $2,000 per day. If store employees are trained to perform local tests on the machine each

> CDC Discrete Fabricators wants to produce parts in batches of 300 parts. Each part must be processed sequentially from workstation A to B to C to D. a. How many seconds is required to produce the batch under the assumptions of batch processing? b. How ma

> Esplanade Marine Parts Inc. wants to produce parts in batches of 100 parts. Each part must be processed sequentially from workstation A to B. a. How many seconds is required to produce the batch under the assumptions of batch processing? b. How many seco

> A specification for a spacer plate used in a machine tool has specifications LSL 5 0.05 and USL 5 0.10 cm in thickness. A sample of 100 parts found m 5 0.067 and s 5 0.021. Compute and interpret the process capability indexes Cp, Cpl, Cpu, and Cpk.

> Suppose that a specification calls for LTL 5 2.0 and UTL 5 6.0. A sample of 100 parts found m 5 4.5 and s 5 0.5. Compute Cp, Cpl, Cpu, and Cpk. Should the manager consider any action based on these results?

> The worksheet C17 P37 Data in MindTap provides five examples of control charts. Interpret the patterns in each and determine if the processes are in control. If not, state the type of out-of-control condition that you identify (for example, points outsid

> Consider the following data showing the number of errors per thousand lines of code for a software development project. Find the control limits for a c-chart for monitoring errors per thousand lines of code.

> Del, every wire transfer request is processed first- come-first-served. Some of these wires are for millions of dollars, while others are under $100,” said Betty Kelly, a 28-year-old manager of Cash Movement (CM). She continued, â

> Find control limits for a c-chart with /

> A fast food franchise tracked the number of errors that occurred in customers’ orders. These included wrong menu item, wrong size drink, lack of condiments, wrong price total, and so on. Some orders may have more than one error. In one week, 1,500 orders

> At a pizza restaurant, a 20-week study of 30 pizzas per week found a total of 18 pizzas made improperly. Compute control limits for a p-chart.

> Twenty-five samples of 100 items each were inspected and 68 were found to be defective. Compute control limits for a p-chart.

> Twenty-five samples, each consisting of 200 loan applications at a bank, resulted in a total of 40 applications that had some type of error. Compute the control limits for a p-chart.

> Thirty samples of size 4 of the customer waiting time at a call center for a health insurance company resulted in an overall mean of 14.7 minutes and average range of 0.9 minutes. Compute the control limits for x- and R-charts.

> Twenty-five samples of size 5 resulted in an overall mean of 5.42 and an average range of 20. Compute control limits for x- and R-charts.

> Thirty samples of size 3 resulted in an overall mean of 16.51 and average range of 1.30. Compute control limits for x- and R-charts.

> Bill & Becky Travel, Inc. is a full service travel agency. Data in the worksheet C17 P27 Data in MindTap shows results for the question “Would you recommend us to a friend?” from 200 customers who were sampled during one week. Count the number of respons

> Develop cause-and-effect diagrams for any one of the following problems: a. Poor exam grade b. No job offers c. Too many speeding tickets d. Late for work or school

> He filed a lawsuit against us, Luke,” stated Mike Verssa, the Vice President of Operations for the State Human Resources Commission (SHRC). “Luke, you are his manager. What happened? He claims you raised his daily prod

> The following list gives the number of defects found in 30 samples of 100 electronic assemblies taken on a daily basis over one month. Plot these data on a run chart, computing the average value (center line). How do you interpret the chart?

> Reship Solutions, Inc. has a distribution center in Cincinnati, where it receives and breaks down bulk orders from suppliers’ factories and ships out products to retail customers. The different quality cost elements are shown in the tab

> Given the cost elements in the table below, deter- mine the total percentage in each of the four major quality-cost categories.

> Analyze the cost data below. What implications do these data suggest to managers?

> Boardwalk Electronics manufactures 300,000 circuit boards per month. A random sample of 3,000 boards is inspected every week for five characteristics. During a recent week, three defects were found for one characteristic, and two defects each were found

> Nighthawk Airlines measured their numbers of lost bags in one month and found that they had lost 35 bags for 10,000 customers. If the average number of bags per customer is 1.2, how many errors per million opportunities (epmo) does this represent? The wo

> Wellplace Insurance Company processes insurance policy applications in batches of 50. One day, they had ten batches to process and, after inspection, it was found that four batches had nonconforming policies. One batch had three nonconformances, another

> Leatherlike Manufacturing Company makes an artificial leather-like product for the fashion accessory market. The material is made in sheets and has the appearance of a thin rug. Each sheet is 36 inches wide, 100 feet long, and is wound into a roll. The q

> The Naples Newspaper completes production of its daily edition by 5 a.m. A truck picks up pallets loaded with newspapers and delivers them to five neighbor sites, where carriers sort and fold the papers for individual routes. The mileage is shown in the

> 1. Research the parts of the diamond value chain and then answer the following question: How would you describe the type of process used for (a) exploration, (b) diamond mining, (c) sorting and grading, (d) cutting and polishing centers, (e) trading cent

> Dan’s Auto Detailing business performs two major activities: exterior cleanup, and interior detailing. Based on the size of car and condition, time estimates for six cars on Monday morning are as shown in the accompanying table. a. Sequ

> On Monday morning, Baxter Industries has the following jobs waiting for processing in two departments, milling, and drilling, in that order. a. Develop a minimum makespan schedule using Johnson’s rule. b. Construct a Gantt chart for the

> A manufacturing process involving machined components consists of two operations done on two different machines. The status of the queue at the beginning of a particular week is as follows: The processing on machine 2 must follow processing on machine 1.

> At Lynwood Manufacturing, (see Solved Problem 15.9), suppose the dispatcher uses the LWR instead of FNO. Which job (job 2 or job 3) will be scheduled next on the drill press at time 30?

> Five customers brought in computers to be repaired to a small shop. Estimated repair times (in days) and dates promised are given below. Due dates were set based on available technicians; however, one technician had a medical emergency and will be unavai

> A workstation has one maintenance mechanic to re- pair failed machines. We can think of the mechanic as the processor (scarce resource) and the machines awaiting repair as the jobs. Let us assume that six machines are down, with estimated repair times gi

> Five patients arrived at the radiology department in a hospital and are waiting for X-rays. Use the SPT rule to create a schedule. Compute the start time and flow time for each patient.

> On Tuesday morning at 8 a.m., an IT analyst found four project “tickets” in her inbox that arrived over- night. The estimated times to complete the projects and the due dates requested are given below. If the projects

> These six jobs are to be scheduled on a single machine: a. Suppose the jobs are processed in FCFS numerical order. Compute the makespan, flow time for each job, and overall average flow time. b. In what order would the jobs be processed using the SPT rul

> Five jobs are to be processed on one machine. If the jobs are processed in the FCFS order 1-2-3-4-5, compute the start time and flow time for each job:

> The Hickory Medical Clinic recently conducted a patient satisfaction survey. Using a scale of 1–5, with 1 being “very dissatisfied” and 5 being “very satisfied,” th

> Zappos (www.zappos.com) is a Las Vegas–based online retailer that has been cited in Fortune’s list of the Best Companies to Work For and Fast Company’s list of the world’s most innov

> A supermarket has the following minimum personnel requirements during the week. Each employee is required to have two consecutive days off. How many regular employees are required, and what is a good schedule?

> A hospital emergency room needs the following numbers of nurses: Each nurse should have two consecutive days off. How many full-time nurses are required, and what is a good nurse schedule?

> Garden Manufacturing is a small, family-owned garden tool manufacturer located in Florence, South Carolina. The bills of materials for models A and B of a popular garden tool are shown in Exhibit 14.35 and other additional component information is provid

> The MPS for product A calls for 100 units to be completed in week 4 and 200 units in week 7 (the lead time is one week). Spare part demand for Item B is 10 units per week. The bill of materials for product A is shown in Exhibit 14.34, and the inventory r

> Consider the master production schedule, BOM shown in Exhibit 14.33, and inventory data shown below. Complete the MPS and MRP explosion and identify what actions, if any, you would take given this requirements plan. a. Develop a material requirement plan

> An orthopedic surgeon specializes in three types of surgery—hip, knee, and ankle replacements. The surgery mix is 40% hip replacements, 50% knee replacement, and 10% ankle replacement. Partial bills of materials for each type of surgery

> The BOM for product A is shown in Exhibit 14.32 and data from the inventory records are shown in the table. In the master production schedule for product A, the MPS quantity row (showing completion dates) calls for 250 units in week 8. The lead time for

> Irene’s Kitchen & Catering Service sells three kinds of cakes—single, double, and triple layers. The product mix is 30% single layer, 50% double layer, and 20% triple layer. The bills of material are as follows: a.

> Each bank teller workstation is forecast to process 400 transactions (the end item) on Friday. The bank is open from 9:00 a.m. to 7:00 p.m. on Friday with 90 minutes for lunch and breaks. Three teller windows are open on Friday. A work-study analysis rev

> Given the information below, complete the MRP record and explain what it tells the inventory analyst to do. Lot Size Rule: Fixed Q 5 100 units Safety Stock 5 0 units Lead Time 5 three weeks Current On-Hand Quantity 5 80 units

> Lilly Hillcrest started a custom drapery business in Naples, Florida in 2014. Her market segment is for owners of homes over one million dollars. Her prices are high, but the customer receives exceptional personal service and a service guarantee on all w

> Given the bill of material in Exhibit 14.31, if the gross requirements to build 250 units and an on-hand inventory for A of 40 units, what are the net requirements for all items? All component parts have zero on-hand inventory except item D with 200 unit

> Consider the same bill of material in Exhibit 14.30 and information in Problem 31 including the on-hand component quantities. Assume that two of component B are needed for each A and that the gross requirement for A is 220 units. Compute the net requirem

> Given the bill of material for the printer cartridge in problem 31 and Exhibit 14.30, and the following on-hand quantities, compute the net requirements for each item. The gross requirement for A is still 200 units.

> Given the bill of material for the printer cartridge (A) in Exhibit 14.30; a gross requirement to build 200 units of A; an on-hand inventory level for end- item A of 80 units; and assuming zero lead-times for all items A, B, C, D, and E, compute the net

> The Silver Star Bicycle Company will be manufacturing men’s and women’s models of its Easy-Pedal 10-speed bicycle during the next two months, and the company would like a production schedule indicating how many bicycles of each model should be produced i

> A lawn chair company, Leisure Furniture, manufactures two types of deck and lanai reclining chairs. Contribution to profits and overhead for Model A chairs are $35 and for Model B chairs $26. One independent process cuts and sews the weather proof fabric

> Metal Fabricators, Inc. manufactures gas grill tanks, Model # 1420, for four original equipment manufacturers (OEMs). Demand is forecast to be as follows: Quarter 1 – 2,800 tanks, Quarter 2—3,400, Quarter 3—3,600, and Quarter 4—2,900. Due to a hedging pr

> Jet skis and snowmobiles are assembled by Mobile Incorporated. Because both end-items use the same small engine, you can aggregate demand for the engine assembly. Develop an aggregate plan that uses a level production strategy each quarter and the inform

> Rapallo Corporation manufactures industrial vacuum cleaners with forecasted sales for the next five weeks as follows: Week 1 5 2,000 units, Week 2 5 2,500, Week 3 5 3,000, Week 4 5 3,000, and Week 5 5 3,500. Beginning inventory equals 13,000 units and th

> The forecast demand for fudge for the next four months is 120, 160, 20, and 70 pounds. a. What is the recommended production rate if a level strategy is adopted with no backorders or stock outs? What is the ending inventory for Month 4 under this plan? b

> 1. Explain whether the global diamond supply chain a push system or a pull system, and whether the global diamond supply chain is an efficient or responsive system for make-to-order and make-to-stock jewelry. Provide some examples to justify your reasoni

> Using the data in Problem 38, assume the operating manager reduces total average inventory on-hand by 21 percent by using better operations and supply chain methods. What is the revised cash-to-cash conversion cycle in weeks? What does this change in the

> As an operations management consultant, you have been asked to evaluate a furniture manufacturer’s cash-to-cash conversion cycle under the following assumptions: sales of $23.5 million, cost of goods sold of $20.8 million, 50 operating weeks a year, tota

> Consider the following performance data for Modular Computers, Inc (MCI). Sales 5 $34 million, cost of goods sold 5 $30 million, total average inventory 5 $428,000, accounts receivable 5 $2,100,000, accounts payable 5 $2,900,000, and operating 365 days p

> Given the information in Exhibit 13.11, what are the procurement, oversight, transportation, order cycle inventory, pipeline inventory costs, and total supply chain costs for using the supplier Ebert, Inc. Ebert manufactures small speakers for automobile

> Given the information in Exhibit 13.10, compute the procurement, oversight, transportation, order cycle inventory, pipeline inventory costs, and total supply chain costs for an air conditioner coil purchased from the supplier Entity, Inc. The order size

> What is the annual transportation cost if annual demand is 240,000 units and the cost to transship a unit is $0.80 per unit?

> What are order cycle costs if annual demand is 8,000 units, the order quantity is 1,000 units, and annual order cost is $97? What if the order size changes to 500 units or 8,000 units?

> What is the pipeline inventory value if average daily demand is 82 units, the lead time is 20 days, and annual inventory carrying costs is $12?

> What are total purchase and oversight costs if annual demand is 1,000,000 units, the purchase price is $2.42, and the management oversight costs to monitor and expedite the trans-Pacific shipment are $0.16 per unit?