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supply chain management 2nd
Supply Chain Management 2nd Edition Nada R. Sanders - Solutions
What sustainability issues are present in the example restaurant order fulfillment process example (Exhibits 7.6 and 7.7)? What other restaurant processes need to include sustainability criteria in their design and day-to-day management? EXHIBIT 7.6 Restaurant Order Posting and Fulfillment Process
Develop a value stream map for the process you flowcharted in question 27 to identify the valueadded and non-value-added activities. How can you estimate costs and/or revenue for the process steps?Question 27Draw a flowchart for a process of interest to you, such as a quick oil-change service, a
Carbon dioxide emissions associated with a onenight stay in a hotel room are calculated at 29.53 kg of CO2 per room day for an average hotel. The 200 rooms of your hotel are all occupied for two days during a college football game.a. How much CO2 did the guests and hotel release into the
A JetAir 304 airplane emits 22 kilograms of carbon dioxide per hour while flying. Today, the plane flew for 8.2 hours on six flights. This emission rate doesn’t include the time on the ground running its engines and other airport gate and airport emissions.a. How much carbon dioxide did the
On Clear Water Pool Service (CWPS), CWPS replaced a fleet of pool service vans with hybrid/electric- and gasoline-driven systems. This reduced the number of gallons of gasoline used to 6,000 gallons per year. How many metric tons of carbon dioxide did not go into Earth’s atmosphere because CWPS
Given the information in problem 34, what do you recommend if Worthington Machining can buy folded metal panels of identical size at a price of $27.25 per panel?Problem 34 Worthington Machining must decide whether to purchase Process A with specialized metal folding equipment needing two employees
The police department of a major city needs a faster process to do criminal background checks.They eliminated several vendors and their products because they required too much retraining and major changes in search process steps. The police department review committee thought many of these searches
Dot’s Restaurant must decide between two technology processes in their kitchen. They only serve dinner after 4 p.m. on a small island called Sanibel. The restaurant is open 250 days per year. Dot and her husband, Ham, are retired. They became bored playing golf five times a week and decided to
Refer to Exhibit 7.7, the restaurant value stream map, and recompute the total value-added and non-value-added time and cost given the following new information. If a restaurant uses iPads to place orders and notify waiters when the customer’s order is ready, the time on the order board (now an
Samoset Fans, Inc. manufacturers its fan blades in-house. The owner, Betty Dice, doesn’t outsource any fan parts except fan motors—all other fans parts are made in-house. Their current process and its equipment are getting old. Maintenance and repair costs are increasing at eight percent per
Rework computational problem 34 (Worthington Machining) using the Break-Even Excel template in MindTap to answer the following questions:a. What is the break-even quantity between these two processes?b. If predicted demand for next year is 120,000 panel folds, what process do you recommend?What is
Rework computational problem 36 (college textbook publisher) using the Break-Even template in MindTap and answer the following questions:a. What is the break-even quantity for this book?b. If the variable cost increased 10 percent due to poor operating performance, what is the new break-even
An automated car wash called Jet Express outside a large Texas city on the beltway is deciding whether to build and install one dedicated vehicle wash line or have two parallel wash lines. There are no other cash washes at this intersection and there will be none because all the land is developed.
The deli at a Metro Supermarket experiences constant and continuous demand. Staffing is a problem for store managers but several of the employees suggested they buy more deli cutting machines and weighing scales and place them side-by-side.Currently, three slicing machines and two weighing scales
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 work. Customer service and the quality of
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,” the clinic compiled a check sheet for responses that were either 1 or 2, indicating dissatisfaction with the performance
What are the advantages and disadvantages of each of the major types of layout patterns? Provide one example of each type of layout for goods-producing and service-providing firms.
What is the role of ergonomics in job design? What factors do you think are the most important?
An assembly line with 30 activities is to be balanced.The total amount of time to complete all 30 activities is 60 minutes. The longest activity takes 2.4 minutes and the shortest takes 0.3 minutes.The line will operate for 480 minutes per day.a. What are the maximum and minimum cycle times?b. How
In problem 37, suppose the line is balanced using 14 workstations and a finished product can be produced every 4.5 minutes.a. What is the production rate in units per day?b. What is the assembly line efficiency?
A small assembly line for the assembly of power steering pumps needs to be balanced. Exhibit 8.14 is the precedence diagram. The cycle time is determined to be 1.5 minutes. How would the line be balanced by choosing the assignable task having the longest task time first? EXHIBIT 8.14 Precedence
For the assembly line described in problem 39, how would the line be balanced by choosing the assignable task having the shortest task time first?Problem 39A small assembly line for the assembly of power steering pumps needs to be balanced. Exhibit 8.14 is the precedence diagram. The cycle time is
To make one particular model of a personal digital assistant (PDA) on an assembly line, the work content is defined by the ten tasks below.a. Draw the precedence diagram for this assembly line.b. What is the cycle time if you want to produce 4,500 PDAs per workday assuming 7.5 hours per day?c. What
The Florida Appliance Company is installing an assembly line to produce vacuum cleaners, and you, as an operations manager, are responsible for balancing the line. The tasks to be performed are listed below, along with their task times in seconds and immediate predecessors.a. Draw the precedence
“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 productivity quota for processing invoices from 200 to 300.”“Mr. Verssa, I
“Del, every wire transfer request is processed firstcome-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, “I’m also concerned that all wires regardless of dollar amount
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.
How is forecasting used throughout the value chain?
What is a time series? Explain the four characteristics that time series may exhibit and provide some practical examples.
Explain the importance of selecting the proper planning horizon in forecasting.
Define forecast error. Explain how to calculate the three common measures of forecast accuracy.
Explain how to determine the number of data values (k) in a moving average forecast.
Explain the role of judgment in forecasting.
Compute MSE, MAD, and MAPE (Equations 9.1 to 9.3) for the following customer satisfaction data: Month 1 SAWN 2 3 4 5 Customer Satisfaction Score Forecast 88.4 87.2 90.1 92.7 91.5 84.0 86.6 89.1 88.7 89.9
ProScript sells writing software that edits and proofs manuscripts. The last six months of data are shown below:Compute MSE, MAD, and MAPE (Equations 9.1 to 9.3) for these data. Month 16 17 18 19 20 Demand 230 197 222 240 252 Forecast 200 185 210 228 239
A manufacturer uses a moving average to predict how many replacement parts for Part #8119 they should produce per month. Past demand is as follows:What are the forecasts for month seven using two-, four-, and six-period moving averages? What can we learn from the answers? Month 1 23 m 4 5 6 Demand
For the coffee maker sales, use the Exponential Smoothing Excel template with a = 0.2 to compute the exponential smoothing forecasts for February through July.
Forecasts and actual sales of digital music players at Just Say Music are as follows:a. Plot the data on a spreadsheet and provide insights about the time series.b. What is the forecast for November, using a twoperiod moving average?c. What is the forecast for November, using a three-period moving
For the actual sales data at Just Say Music in problem 36, find the best single exponential smoothing model by evaluating the MSE for a from 0.1 to 0.9, in increments of 0.1. How does this model compare with the best moving average model found in problem 36?
To plan factory staffing levels, Luke’s Surfboards, needs to forecast sales for the next two quarters.Sales of surfboards for the last five years are shown below in millions of dollars. These data are available in the worksheet C9 Excel P38 Data in MindTap.a. Use the Moving Average Excel template
A restaurant wants to forecast its weekly sales.Historical data (in dollars) for fifteen weeks are shown below and can be found in the Excel worksheet C9 Excel P39 Data in MindTap. Use Excel and the Moving Average template to answer the following questions. (Note: You may copy the data from the
Consider the quarterly sales data for Kilbourne Health Club shown below.These data are available in a simpler format in the Excel worksheet C9 Excel P41 in MindTap.a. Use the Moving Average Excel template to develop a four-period moving average model and compute MAD, MAPE, and MSE for your
The historical demand for the Panasonic Model 304 Pencil Sharpener is January, 80; February, 100;March, 60; April, 80; and May, 90 units.a. Using a four-month moving average and the Moving Average Excel template, what is the forecast for June?b. Develop a linear regression model using Excel and
Two experienced managers are resisting the introduction of a computerized exponential smoothing system, claiming that their judgmental forecasts are much better than any computer could do.Their past record of predictions is as follows:These data are available in the Excel worksheet C9 Excel P48 in
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 shown in Exhibit 9.17 (these data are available
“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 representative (CSR). “I’ve got a problem. My best customer, with assets of over $10 million in
The Hudson Jewelers case study found in MindTap integrates material found in each chapter of the book.Case Question for Discussion:1. The worksheet Hudson Jeweler Demand Case Data in MindTap provides the number of visits over one year from January to December (52 weeks). Chart the data in Excel and
Define useful capacity measures for a(n)a. brewery.b. airline.c. movie theater.d. pizza restaurant.e. amusement park.
What types of jobs are best suited to apply learning curves? How would you determine this?
An order fulfillment process normally operates two shifts a day, six days per week. Under ideal conditions, 380 orders can be processed per shift.What is the effective weekly theoretical capacity?
Hickory Manufacturing Company forecasts the following demand for a product (in thousands of units) over the next five years.Currently the manufacturer has seven machines that operate on a two-shift (eight hours each) basis.Twenty days per year are available for scheduled maintenance of equipment
The consumer loan division of a major bank wants to determine the size of the staff it would need to process up to 200 loan applications per day.It is estimated that each loan officer can process a loan application in approximately 20 minutes and works seven hours each day. How many loan officers
The roller coaster at Treasure Island Amusement Park consists of 16 cars, each of which can carry up to three passengers. According to a time study, each run takes 2.5 minutes, and the time to unload and load riders is 3.5 minutes. What is the theoretical capacity of the system in number of
The quad chair lift at Whiteface Mountain Ski Resort carries four skiers in each chair to the top of the intermediate slope in four minutes based on timing a large sample of skiers. The time between loading skiers on successive chairs is 15 seconds.a. What is the effective capacity of the system in
The basic pizza-making process consists of (1) preparing the pizza, (2) baking it, and (3) cutting and boxing (or transferring to a platter for dine-in service). It takes five minutes to prepare a pizza, eight minutes to bake it, and one minute to cut and box or transfer. If the restaurant has only
A lab performs two type of blood tests, A and B.The time per setup (in minutes), processing time(in seconds), and order size (number of tests)is given below. Each test requires a new setup.Determine the total capacity required for this lab in minutes. Blood Test A B Setup Time (Minutes) 7.5 6.0
Medical Solutions, Inc. has the following claims it must complete in the next week (40 hours).The jobs are as follows:All claims of the same type are processed together.Is 40 hours enough capacity? Claim Type Cancer Treatment Spinal Injury Hip Replacement Number of Claims Setup to Process
As the assistant manager of a restaurant, how many servers will you need given the following information for Saturday night’s dinner menu?• Demand (dinners served) = 100 dinners per hour• Service rate per server = 16 dinners/hour What assumptions might be needed in this problem?
We know the following data for Albert’s fabricating production area:Number of machines = 5 Number of working days in year = 340 Processing time per unit = 60 minutesa. What is the annual capacity with a single eighthour shift?b. What is the annual capacity with two shifts?
Worthington Hills grocery store has five regular checkout lines and one express line (12 items or less).Based on a sampling study, it takes 11 minutes on the average for a customer to go through the regular line and four minutes to go through the express line.The store is open from 9 a.m. to 9 p.m.
Tony’s Income Tax Service is determining its staffing requirements for the next income tax season.Income tax preparers work 50 hours per week from January 15 through April 15 (assume four weeks per month). There are two major tasks: preparation of short forms and preparation of long forms. The
A hotel hosts banquets for conferences in a large ballroom with tables of eight. Servers must get the meals from the kitchen, bring them out to the tables, and then place the meals on the tables. It takes four minutes to get the meals, bring them out to the tables, and then 15 seconds to serve each
Yacht Superior manufactures boats for a yacht rental firm. They are in negotiation for the total price for 50 Model C314 yachts. Based on past experience, the learning rate for their employees and system is 75 percent and they estimate the first unit will require 2,750 labor hours. Use the Learning
A manufacturer has committed to supply 16 units of a particular product in four months (i.e., 16 weeks) at a price of $30,000 each. The first unit took 1,000 hours to produce. Even though the second unit took only 750 hours to produce, the manufacturer is anxious to knowa. if the delivery
The Hudson Jewelers case study available in MindTap integrates material found in each chapter of this book.Case Question for Discussion:1. Explain how capacity is measured at the following stages of the diamond value chain: (a) mining, (b) cutting and polishing, (c) jewelry manufacturing for
Define utilization and explain two ways computing resource utilization.
What is a bottleneck? Explain why is it important.
What is a queue, and why is it important to understand it?
Select a service process and draw the flowchart using no more than 10 process steps. The service process can be based on your work experience, such as in accounting or human resource management, or a familiar process such as a quick-service automobile oil change, buying an automobile, getting a
How would you apply the TOC to a quick-service automobile oil change process? Explain.
A 30,000-seat college football stadium is used 18 times for games, concerts, and graduation ceremonies.Each event averages six hours and assumes the stadium is full for each event. The stadium is available 365 days a year from 6 a.m. to midnight. What is the seat utilization? Can you think of one
A plant manufactures three products, A, B, and C.A drill press is required to perform one operation for each product. Machine operators work at 75 percent utilization, and the machines have 95 percent utilization. The plant operates one eight-hour shift 20 days per month. The operation times for
The demand for intensive care services in an urban hospital is nine patients per hour on Mondays while intensive care nurses can handle four patients per hour. What is nurse (labor) utilization if five intensive care nurses are scheduled to be on duty for Monday? What are the advantages and
A telephone call center uses three customer service representatives (CSRs) during the 8:30 to 9:00 a.m.time period. The standard service rate is 3.0 minutes per telephone call per CSR. Assuming a target labor utilization rate of 80 percent, how many calls can these three CSRs handle during this
What is the implied service rate at a bank teller window if customer demand is 26 customers per hour, two bank tellers are on duty, and their labor utilization is 90 percent?
How can you improve throughput for the process in part (b) of problem 35? Assume that all 17 workers have the ability to perform the work at each stage but that no additional workers may be hired.
A medical equipment testing and calibration service is depicted in Exhibit 11.28. The customer usually brings the equipment to the service center. The service process requires service technicians to perform three process steps #1 to #3. Each technician is cross-trained so they can perform any of
What is the average time a loaf of sliced bread stays in an urban sandwich shop if the restaurant uses 46 loaves per day and they maintain an average inventory of 150 loaves?
An airport limousine service has one employee work the airport counter. A customer arrives on the average of once every three minutes, and it takes on average two minutes to process the transaction.a. What is the probability that the system is empty?b. What is the probability that a customer must
Jefferson Manufacturing machines parts for assembly in air compressors. The process is shown in Exhibit 11.30.a. Where is the bottleneck workstation? Cite one TOC principle from Exhibit 11.22 that explains your answer.b. What is the longest throughput time for the entire work cell?c. If Jefferson
Rambler Manufacturing produces three clutch plates for small automobiles at its factory in Columbus, Ohio. The three processes shown in Exhibit 11.32 are composed of common and different work activities to manufacture the clutch plates.Exhibit 11.33 provides information on each clutch plate’s
For Rambler Manufacturing in problem 49, suppose that sales of clutch plates 1, 2, and 3, respectively are 180, 300, and 200 units for the week, and workstation C works two shifts for a total of 90 hours this week. What is the workload in hours for the week on workstation C and what is workstation
For Rambler Manufacturing in problems 49 and 50, would you rather invest the same amount of money to double the throughput rate of workstation B or C? Explain your reasoning.
An express checkout line at a grocery store takes an average of three minutes to ring-up a customer’s order. On average six customers are in the checkout line. Use the Excel template Little’s Law to find the average number of customers per hour that are processed in the checkout line.
Arrivals to a single server queue occur at an average rate of three per minute. Use the appropriate Excel function to develop the probability distribution for the number of arrivals for x = 0 through 10.
Keuka Park Savings and Loan currently has one drive-up teller window. Cars arrive at a mean rate of 10 per hour. The mean service rate is 12 cars per hour. Use the Single Server Queue Excel template to answer the following questions:a. What is the probability that the service facility will be
Fore and Aft Marina is a new marina planned for a location on the Ohio River near Madison, Indiana.Assume that Fore and Aft decides to build one docking facility and expects a mean arrival rate of five boats per hour and a mean service rate of 10 boats per hour. Use the Single Server Queue Excel
The City Beverage Drive-Thru is considering a two-server system. Cars arrive at the store at the mean rate of six per hour. The service rate for each server is 10 per hour. Use the Multiple Server Queue Excel template to answer the following questions:a. What is the probability that both servers
The district manager of a fast-food restaurant chain was receiving numerous complaints about customers waiting too long at the counter to place and receive their order. During the peak hour of store operation, the district manager’s audit team found that customers arrived at an average rate of
Kurelis Interior Design provides home and office decorating assistance. In normal operation an average of 2.5 customers arrive per hour. One design consultant is available to answer customer questions and make product recommendations. The consultant averages 10 minutes with each customer. Use the
Keuka Park Savings and Loan currently has one drive-up teller window. Cars arrive at a mean rate of 10 per hour. The mean service rate is 12 cars per hour per window. To improve its customer service, Keuka Park Savings and Loan wants to investigate the effect of a second drive-up teller window.
Trosper Tire Company has decided to hire a new mechanic to handle all tire changes for customers ordering new tires. Two mechanics are available for the job. One mechanic has limited experience and can be hired for $22 per hour. It is expected that this mechanic can service an average of three
Kurelis Interior Design (see problem 67) provides home and office decorating assistance. On average, their high-end customers spend $36,000 on interior design fees plus $186,000 for furniture. In normal operation an average of 2.5 customers arrive per hour. One design consultant is available to
An airport limousine service has one employee work the airport counter. A customer arrives on the average of once every three minutes, and it takes on average two minutes to process the transaction. Use the Single Server Queue Excel template to answer the following questions:a. What is the
A medical clinic has two administrators handling all processing of insurance claims in a shared office. Administrator A handles only private insurance claims and processing. Administrator B handles only Medicare claims. On average, it takes about the same time (15 minutes) to process private or
“Why don’t they buy another copying machine for this office? I waste a lot of valuable time fooling with this machine when I could be preparing my legal cases,” noted Mr. H.C. Morris, as he waited in line. The self-service copying machine was located in a small room immediately outside the
The Hudson Jewelers case study found in MindTap integrates material found in each chapter of this book.Case Questions for Discussion:1. What is the average number of customers per hour that can be served for Activity B (CAD Demo & Jewelry Concept) if two employees are in the store? Assume each
Describe the major characteristics that impact inventory decisions.
Explain how a fixed-period inventory system operates.
Does the EOQ increase or decrease if estimates of setup (order) costs include fixed, semi-variable, and pure variable costs while inventory-holding costs include only pure variable costs? Vice versa?What are the implications? Explain.
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