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business
supply chain management 2nd
ISE Operations And Supply Chain Management 16th International Edition F. Robert Jacobs, Richard B. Chase - Solutions
This refers to the inherent value of the product in the marketplace and is a strategic decision for the firm.LO12-2
Relates to how well a product or service meets design specifications.LO12-2
Relates to how the customer views the ability of the product to meet his or her objectives.LO12-2
The series of international quality standards.LO12-2
What is the enemy of good quality?LO12-2
A Six Sigma process has a goal of producing fewer than how many defects per million units?LO12-2
The standard quality improvement methodology developed by General Electric.LO12-2
Understand what a waiting line problem is.LO10-2
Analyze waiting line problems.LO10-2
Analyze complex waiting lines using simulation.LO10-2
What is the average performance time of each worker?5. What is the output rate of product through this line?LO10-2
How much time does Bob wait for Ray?LO10-2
How much time does Ray wait for Bob?LO10-2
Distinguish between a channel and a phase.LO10-2
In what way might the first-come, first-served rule be unfair to the customer waiting for service in a bank or hospital?LO10-2
Define, in a practical sense, what is meant by an exponential service time.LO10-2
Would you expect the exponential distribution to be a good approximation of service times fora. Buying an airline ticket at the airport?b. Riding a merry-go-round at a carnival?c. Checking out of a hotel?d. Completing a midterm exam in your OSCM class?LO10-2
Would you expect the Poisson distribution to be a good approximation ofa. Runners crossing the finish line in the Boston Marathon?b. Arrival times of the students in your OSCM class?c. Arrival times of the bus to your stop at school?LO10-2
What major cost trade-off must be made in managing waiting line situations?LO10-2
Which assumptions are necessary to employ the formulas given for Model 1?LO10-3
Why is simulation often called a technique of last resort?LO10-2
Must you use a computer to get good information from a simulation?Explain.LO10-2
What are the pros and cons of starting a simulation with the system empty? With the system in equilibrium?LO10-2
Distinguish between known mathematical distributions and empirical distributions. What information is needed to simulate using a known mathematical distribution?LO10-2
The exponential distribution is often used to model what in a queuing system?LO10-2
If the average time between customer arrivals is eight minutes, what is the hourly arrival rate?LO10-2
How much time, on average, would a server need to spend on a customer to achieve a service rate of 20 customers per hour?LO10-2
What is the term used for the situation where a potential customer arrives at a service operation and decides to leave upon seeing a long line?LO10-2
What is the most commonly used priority rule for setting queue discipline, likely because it is seen as most fair?LO10-2
Students arrive at the Administrative Services Office at an average of one every 15 minutes, and their requests take, on average, 10 minutes to be processed. The service counter is staffed by only one clerk, Judy Gumshoes, who works eight hours per day. Assume Poisson arrivals and exponential
An engineering firm retains a technical specialist to assist four design engineers working on a project. The help that the specialist gives engineers ranges widely in time consumption. The specialist has some answers available in memory, others require computation, and still others require
Bobby, another enterprising barber, is thinking about advertising in the local newspaper because he is idle 45 percent of the time.Currently, customers arrive, on average, every 40 minutes. What does the arrival rate need to be for Bobby to be busy 85 percent of the time?LO10-2
At a border inspection station, vehicles arrive at the rate of 10 per hour in a Poisson distribution. For simplicity in this problem, assume there is only one lane and one inspector, who can inspect vehicles at the rate of 12 per hour in an exponentially distributed fashion.a. What is the average
A toll tunnel has decided to experiment with the use of a debit card for the collection of tolls. Initially, only one lane will be used. Cars are estimated to arrive at this experimental lane at the rate of 750 per hour. It will take exactly four seconds to verify the debit card.(Answers in
A local fast-food restaurant wants to analyze its drive-through window. At this time, the only information known is the average number of customers in the system (4.00) and the average time a customer spends at the restaurant (1.176 minutes). What are the arrival rate and the service rate?LO10-3
Calculate the average customer arrival rate and service rate per hour.LO10-2
Calculate the probability of zero patients in the system (P0), probability of one patient (P1), and the probability of two or more patients simultaneously arriving during the night shift.LO10-2
Using a criterion that if the probability is greater than 1 percent, a backup OR team should be employed, make a recommendation to hospital administration.LO10-2
Draw a diagram of the process using the format in Exhibit 9.5.LO10-2
Consider a base case where a customer arrives every 40 seconds and the Customer Service Champion can handle 120 customers per hour. There are two Food Champions, each capable of handling 100 orders per hour. How long should it take to be served by the restaurant (from the time a customer enters the
On average, how busy are the Customer Service Champions and the two Food Champions?LO10-2
On average, how many cars do you expect to have in the drivethrough line? (Include those waiting to place orders and those waiting for food.)LO10-2
If the restaurant runs a sale and the customer arrival rate increases by 20 percent, how would this change the total time expected to serve a customer? How would this change the average number of cars in the drive-through line?LO10-2
Currently, relatively few customers (less than ½ percent) order the Crunchwrap Supreme. What would happen if the restaurant ran the sale, demand jumped on the Crunchwrap Supreme, and 30 percent of the orders were for this item? Take a quantitative approach to answering this question. Assume that
For the type of analysis done in this case, what are the key assumptions? What would be the impact on our analysis if these assumptions were not true?LO10-2
Could this type of analysis be used for other service-type businesses? Give examples to support your answer.LO10-2
The queuing models assume that customers are served in what order?LO10-2
Consider two identical queuing systems except for the service time distribution. In the first system, the service time is random and Poisson distributed. The service time is constant in the second system. How would the waiting time differ in the two systems?LO10-2
What is the average utilization of the servers in a system that has three servers? On average, 15 customers arrive every 15 minutes. It takes a server exactly three minutes to wait on each customer.LO10-2
What is the expected waiting time for the system described in question 3?LO10-2
Firms that desire high service levels where customers have short wait times should target server utilization levels at no more than this percentage.LO10-2
In most cases, if a firm increases its service capacity by 10 percent, it would expect waiting times to be reduced by what percentage?Assume customer arrivals and service times are random.LO10-2
An ice cream stand has a single window and one employee to serve customers. During their busy season, 30 customers arrive each hour, on average. It takes 1.5 minutes, on average, to serve a customer. What is the utilization of the employee?LO10-2
How long would customers have to wait in line, on average, at the ice cream shop discussed in question 7?LO10-2
Random service times can be modeled by this.LO10-2
A bank teller takes 2.4 minutes, on average, to serve a customer.What would be the hourly service rate used in the queuing formulas?LO10-2
There are three teller windows in the bank described in the prior question. On average, 60 customers per hour arrive at the bank.What will be the average number of customers in line at the bank?LO10-2
How might the following business specialists use learning curves:accountants, marketers, financial analysts, personnel managers, and computer programmers? LO-1
What relationship is there between learning curves and productivity measurement?LO-1
What relationship is there between learning curves and capacity analysis?LO-1
Do you think learning curve analysis has an application in a service business like a restaurant? Why or why not?LO-1
As a manager, which learning percentage would you prefer (other things being equal), 110 percent or 60 percent? Explain.LO-1
Will the Human Resource Management (HRM) policies of a firm have much of an effect on the learning rates the firm may be able to achieve?LO-1
One manufacturer has seen a typical learning percentage of 90 percent in the firm. It has recently found out that a competitor has a percentage of 85 percent. What do you think about this?LO-1
What difference does it make if a customer wants a 10,000-unit order produced and delivered all at one time or in 2,500-unit batches?LO-1
Firm A typically sees a learning percentage of 85 percent in its processes. Firm B has a learning percentage of 80 percent. Which firm has the faster learning rate?LO-1
Company Z is just starting to make a brand new product it has never made before. It has completed two units so far. The first unit took 12 hours to complete and the next unit took 11 hours. Based only on this information, what would be the estimate of the learning percentage in this process?LO-1
Omega Technology is starting production of a new supercomputer for use in large research universities. It has just completed the first unit, which took 120 labor hours to produce. Based on its experience, it estimates its learning percentage to be 80 percent. How many labor hours should it expect
You’ve just completed a pilot run of 10 units of a major product and found the processing time for each unit was as follows:Unit Number Time (hours)1 970 2 640 3 420 4 380 Unit Number Time (hours)5 320 6 250 7 220 8 207 9 190 10 190a. According to the pilot run, what would you estimate the
Lazer Technologies Inc. (LTI) has produced a total of 20 high-power laser systems that could be used to destroy any approaching enemy missiles or aircraft. The 20 units have been produced, funded in part as private research within the research and development arm of LTI, but the bulk of the funding
Johnson Industries received a contract to develop and produce four high-intensity long-distance receiver/transmitters for cellular telephones. The first took 2,000 labor hours and $39,000 worth of purchased and manufactured parts; the second took 1,500 labor hours and $37,050 in parts; the third
Lambda Computer Products competed for and won a contract to produce two prototype units of a new type of computer that is based on laser optics rather than on electronic binary bits.The first unit produced by Lambda took 5,000 hours to produce and required $250,000 worth of material, equipment
United Research Associates (URA) had received a contract to produce two units of a new cruise missile guidance control. The first unit took 4,000 hours to complete and cost $30,000 in materials and equipment usage. The second took 3,200 hours and cost $21,000 in materials and equipment usage. Labor
Which type of system is likely to have a faster learning rate—one with primarily highly automated equipment or one that is very labor intensive?LO-1
Which industry will typically have a faster learning rate: a repetitive electronics manufacturer or a manufacturer of large complex products such as a shipbuilder?LO-1
True or False: The only learning for an organization comes from the individual learning of its employees.LO-1
A company has just tested the skills of two applicants for the same job. They found that applicant A had a higher learning rate than applicant B. Should they definitely hire applicant A?LO-1
Understand what a manufacturing process is.LO7-2
Explain how manufacturing processes are organized.LO7-2
Analyze simple manufacturing processes.LO7-2
What is meant by a process? Describe its important features.LO7-2
What is a customer order decoupling point? Why is it important?LO7-2
What’s the relationship between the design of a manufacturing process and the firm’s strategic competitive dimensions (Chapter 2)?LO7-2
What does the product–process matrix tell us? How should the kitchen of a Chinese restaurant be structured?LO7-2
It has been noted that, during World War II, Germany made a critical mistake by having its formidable Tiger tanks produced by locomotive manufacturers, while the less formidable U.S. Sherman tank was produced by American car manufacturers. Use the product–process matrix to explain that mistake
How does the production volume affect break-even analysis?LO7-2
What is meant by manufacturing process flow?LO7-2
Why is it that reducing the number of moves, delays, and storages in a manufacturing process is a good thing? Can they be completely eliminated?LO7-2
The customer order decoupling point determines the position of what in the supply chain?LO7-2
Dell’s primary consumer business takes orders from customers for specific configurations of desktop and laptop computers. Customers must select from a certain model line of computer and choose from available parts, but within those constraints they may customize the computer as they desire. Once
What term is used to mean manufacturing designed to achieve high customer satisfaction with minimum levels of inventory investment?LO7-2
How would you characterize the most important difference for the following issues when comparing a workcenter (job shop) and an assembly line?Issue Workcenter (Job Shop)Assembly Line Number of setups/job changeovers Labor content of product Flexibility LO7-2
The product–process matrix is a convenient way of characterizing the relationship between product volumes (one-of-a-kind to continuous)and the processing system employed by a firm at a particular location. Characterize the nature of the intersection between the type of shop (column) and process
For each of the following variables, explain the differences (in general) as one moves from a workcenter to an assembly line environment.a. Throughput time (time to convert raw material into product)b. Capital/labor intensityc. BottlenecksLO7-2
A book publisher has fixed costs of $300,000 and variable costs per book of $8.00. The book sells for $23.00 per copy.a. How many books must be sold to break even?b. If the fixed cost increased, would the new break-even point be higher or lower?c. If the variable cost per unit decreased, would the
A manufacturing process has a fixed cost of $150,000 per month.Each unit of product being produced contains $25 worth of material and takes $45 of labor. How many units are needed to break even if each completed unit has a value of $90? (Answer in Appendix E)LO7-2
What type of process flow structure is CBF using?LO7-2
Diagram the process in a manner similar to Exhibit 7.7.LO7-2
Analyze the capacity of the process.LO7-2
What is the impact of losses in the process in the inspection and final test?LO7-2
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