EXAM 2 ISDS 3115
an assembly line has 10 stations with times 1, 2, 3, 4, ... 10, respectivily what is the bottleneck time? a) 100% of the time b) 50% of the time c) 1.82% of the time d) 550% of the time e) 18.18% of the time
18.18% of the throughput time
Among the following choices, an operations manager might best evaluate political risk of a country by looking at which type of country ranking? A. based on corruption Your answer is correct. B. based on magnitude of government social programs C. based on average duration between presidential/prime minister elections D. based on cost of doing business E. based on competitiveness
A
Consider a production line with five stations. Station 1 can produce a unit in 9 minutes. Station 2 can produce a unit in 10 minutes. Station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines). Station 4 can produce a unit in 11 minutes. Station 5 can produce a unit in 8 minutes. Which station is the bottleneck station? A. Station 4 Your answer is correct. B. Station 2 C. Station 5 D. Station 3 E. Station 1
A
In acceptance sampling, the producer's risk is the risk of having a A. good lot rejected. Your answer is correct. B. bad lot accepted. C. good lot accepted. D. bad lot rejected.
A
The two popular measures for quantitatively determining if a process is capable are A. process capability ratio and process capability index. Your answer is correct. B. process mean and standard deviation of the process population. C. process mean and range. D. upper specification and lower specification.
A
What is the probability of accepting a bad lot? A. type II error (beta) Your answer is correct. B. AQL C. type I error (alpha) D. LTPD
A
What layout strategy deals with low-volume, high-variety production? A. process-oriented layout Your answer is correct. B. retail layout C. warehouse layout D. office layout E. fixed-position layout
A
which of the following is false regarding control charts? A) values above the upper control limits imply that the products quality is exceeding expectations. B) control charts graphically present data C) cotrol charts are built so that new data can be quickly compared to past performance data. D) control charts plot data over time E) none of the above is false
A
Rosters Chicken advertises "lite" chicken with 30% fewer calories than standard chicken. When the process for "lite" chicken breast production is in control, the average chicken breast contains 460460 calories, and the standard deviation in caloric content of the chicken breast population is 2525 calories. Rosters wants to design an x overbarx-chart to monitor the caloric content of chicken breasts, where 2525 chicken breasts would be chosen at random to form each sample. a) What are the lower and upper control limits for this chart if these limits are chosen to be four standard deviations from the target? b) What are the limits with three standard deviations from the target?
A) UCL = 480 LCL = 440 B) UCL = 475 LCL = 445
A concert hall, employing both ticket takers and ushers to seat patrons, behaves typically as which of the following? A. single-server, single-phase system B. multiple-server, multiphase system Your answer is correct. C. multiple-server, single-phase system D. single-server, multiphase system E. multiple-server, cross-phase system
B
A system in which the customer receives service from only one station and then exits the system is which of the following? A. a multiphase system B. a single-phase system Your answer is correct. C. a multiple channel system D. a single-channel system E. a limited-access system
B
Frito-Lay is to ________ focus as Harley Davidson is to ________ focus. A) product, mass customization B) product, repetitive C) process, repetitve D) repetitive, product E) process, product
B
Globalization of the location decision is the result of all EXCEPT which of the following? A. ease of capital flow between countries B. higher quality of labor overseas Your answer is correct. C. more rapid, reliable travel and shipping D. market economics E. high differences in labor costs
B
How does just-in-yime (JIT) relate to total quality management (TQM)? A. JIT systems encourage last-minute deliveries, which increases the probability of a late delivery. B. JIT is rooted in continuous improvement and forced problem solving, which improve quality. This is the correct answer. C. JIT increases finished-goods-inventory levels to be able to respond quickly to customers. D. JIT is not related to TQM.
B
In the office relationship chart, which rating reflects the least desirability for two departments' closeness to each other? A. A B. X This is the correct answer. C. O D. E Your answer is not correct. E. I
B
The main goal of retail layout is: A. minimizing space required. B. maximizing profitability per square foot of floor space. Your answer is correct. C. minimizing customer confusion regarding location of items. D. minimizing storage costs. E. minimizing material handling cost.
B
The objective of a statistical process control (SPC) system is to A. provide a statistical signal when natural causes of variation are present. B. provide a statistical signal when assignable causes of variation are present. Your answer is correct. C. assess customer expectations. D. eliminate natural variations
B
What is the primary reason why retailers tend to locate high-draw items around the periphery of the store? A. There will be less congestion of customers than there would be in the middle. B. This arrangement will help to maximize customer exposure to other items in the store. Your answer is correct. C. It is easier to put large advertisement signs on the outside walls right next to the items. D. More shelf space for those popular items is available around the periphery. E. This arrangement allows customers to travel through the store as quickly as possible.
B
Which of the following is an example of a finite arrival population? A. cars arriving at a suburban car wash B. copy machines in a copying shop that break down Your answer is correct. C. shoppers arriving at a supermarket D. students at a large university registering for classes E. all of the above
B
Which of the following is one of the four principles of bottleneck management? A. Lost time at a non-bottleneck is lost system capacity. B. Release work orders to the system at the bottleneck's capacity pace. Your answer is correct. C. Bottlenecks should be moved to the end of the system process. D. Increasing capacity at bottleneck stations is a mirage. E. Increased non-bottleneck capacity is increased system capacity.
B
Which of the following statements regarding "proximity" in the location decision is FALSE? A. Clustering among fast-food chains occurs because they need to be near high traffic flows. Your answer is not correct. B. Service organizations find that proximity to suppliers is the most critical primary location factor. This is the correct answer. C. Manufacturers want to be near customers when their product is bulky, heavy, or fragile. D. Reduction in bulk is a good reason for a manufacturer to locate near the supplier. E. Perishability of raw materials is a good reason for manufacturers to locate near the supplier, not the customer.
B
The Academic Computing Center has five trainers available in its computer labs to provide training sessions to students. Assume that the capacity of the system is 1900 students per semester and the utilization is 90%. If the number of students who actually got their orientation session is 1500, what is the efficiency of the system? a. 1360 students b. 1710 students c. 78.9% d. 87.7% e. 90%
B. 87.7%
A work system has five stations that have process times of 5, 9, 14, 9, and 8. What is the bottleneck time? A. 9 B. 45 C. 14 Your answer is correct. D. 18 E. 35
C
Cause-and-effect diagrams are also known as A. target specification graphs. B. Pareto charts. C. fish-bone charts. Your answer is correct. D. flowcharts.
C
Process capability A. exists when CPK is less than 1.0. B. exists only in theory; it cannot be measured. C. means that the natural variation of the process must be small enough to produce products that meet the standard. Your answer is correct. D. is assured when the process is statistically in control.
C
When making a location decision at the region/community level, which of these would be considered? A. air, rail, highway, waterway systems B. zoning restrictions C. cost and availability of utilities Your answer is correct. D. cultural and economic issues E. government rules, attitudes, stability, incentives
C
Which of the following is NOT one of McDonald's "seven major innovations"? A. drive-through windows B. breakfast menus C. the Happy Meal Your answer is correct. D. self-service kiosks E. play areas
C
Which of the following is the Japanese term used to describe continuous improvement efforts? A. six sigma B. poka-yoke Your answer is not correct. C. kaizen This is the correct answer. D. kanban
C
A location decision for a traditional department store (e.g., Macy's) would tend to have what type of focus? A. environmental focus B. cost focus C. education focus D. revenue focus Your answer is correct. E. labor focus
D
Among the following choices, an operations manager might best evaluate political risk of a country by looking at which type of country ranking? A. based on competitiveness B. based on magnitude of government social programs C. based on cost of doing business D. based on corruption Your answer is correct. E. based on average duration between presidential/prime minister elections
D
Traffic counts and purchasing power analysis of drawing area are techniques associated with: A. the factor-rating method. B. a manufacturing location decision. C. the transportation model. D. a retail or professional service location decision. Your answer is correct. E. locational cost-volume analysis.
D
Which of the following is NOT a common TQM tool? A. scatter diagrams B. histograms C. check sheets D. queuing models
D
Which of the following would NOT be a concerning pattern on a control chart? A. One point above the upper control limit B. Five consecutive points above the central line. C. Two points very near the lower control limit D. All of the above are concerning patterns on a control chart
D
Which of these factors would be considered when making a location decision at the site level? A. proximity to raw materials and customers B. cost and availability of utilities C. cultural and economic issues D. zoning regulations Your answer is correct. E. government rules, attitudes, stability, incentives
D
Which one of the following is NOT a characteristic of a Model B or M/M/S system? A. Poisson arrival rate pattern B. unlimited population size C. single phase D. single server Your answer is correct. E. exponential service time pattern
D
A waiting line, or queuing, system has three parts, which are: A. distribution of arrival times, discipline while waiting, and distribution of service times. B. sequencing policy, penalty for reneging, and expediting of arrivals. C. arrival rate, service rate, and utilization rate. D. arrival discipline, queue discipline, and service sequencing. E. arrivals or inputs, queue discipline or the waiting line itself, and the service facility.
E
An airline ticket counter, with several agents for one line of customers, is an example of which of the following? A. single-server, multiphase system B. single-server, single-phase system C. cross-server, single-phase system D. multiple-server, multiphase system E. multiple-server, single-phase system
E
Members of quality circles are: A) paid according to their contribution to quality. B) external consultants designed to provide training in the use of quality tools. C) always machine operators. D) all trained to be facilitators. E) None of the above; all of the statements are false.
E
Of the four approaches to capacity expansion, the approach that "straddles" demand: A. uses incremental expansion. B. uses one-step expansion. C. some times leads demand, and at other times lags. D. works best when demand is not growing but is stable. E. Choices A and C are both correct
E
The Academic Computing Center has five trainers available in its computer labs to provide training sessions to students. Assume that the design capacity of the system is 1900 students per semester and that effective capacity equals 90% of design capacity. If the number of students who actually got their orientation session is 1500, what is the utilization of the system? A. 1710 students B. 1350 students C. 87.7% D. 90% Your answer is not correct. E. 78.9%
E
Which type of layout features departments or other functional groupings in which similar activities are performed? A. product-oriented B. unit production C. mass production D. fixed-position E. process-oriented
E
which of the following products is likely to be assembled ona repetitive process line? A) beer B) steel C) custom cakes D) custom personal computers E) automobiles
E
A bank office with five tellers, each with a separate line of customers, exhibits the characteristics of a multiphase queuing system. True False
F
A focused work center is well suited to the production of a large family of products requiring similar processing, even if their demands are not very stable. True False
F
A waiting-line system with one waiting line and three sequential processing stages is a multiple-server, single-phase system. True False
F
Capacity decisions are based on technological concerns, not demand forecasts. True False
F
Utilization is the number of units a facility can hold, receive, store, or produce in a period of time. True False
F
A process-oriented layout is the traditional way to support a product differentiation strategy. True Your answer is correct. False
T
One drawback of a product-oriented layout is that work stoppage at any one point ties up the whole operation. True Your answer is correct. False
T
Unfavorable exchange rates can offset other savings in a location decision. True Your answer is correct. False
T
statistical process control charts: A) display upper and lower limits for process variables or attributes and signal when a process is no longer in control B) indicate to the process operator the average outgoing quality of each lot C) display the measurements on every item being produced D) are a graphic way of classifying problems by their level of importance, often referred to as the 80-20 rule E) indicate to the operator the true quality of material leaving the process
a
Adding a complementary product to what is currently being produced is a demand management strategy used when a. demand exceeds capacity b. capacity exceeds demand for a product which has stable demand c. the existing product has seasonal or cyclical demand d. price increases have failed to bring about demand management e. efficiency exceeds 100 percent
c
The purpose of an x-bar chart is to determine whether there has been a: A) change in the dispersion of the process output. B) change in the percent defective in a sample. C) change in the central tendency of the process output. D) change in the number of defects in a sample. E) change in the AOQ.
c
In the mass service and service factory quadrants of the service process matrix, the operations manager could focus on all of the following except:
customization
Which of the four major categories of quality costs is particularly hard to quantify?
external failure costs
An example of the postponement strategy for improving service productivity is having the customer wait until you have sufficient time to serve the customer. true/fasle
false
If the process average is in control, then the process range must also be in control. true/false
false
If the process average is in control, then the process range must also be in control. true/fasle
false
a process that is in statistical control will always yield products that meet their design specifications. true/false
false
Internal failure costs are associated with scrap, rework, and downtime. true/false
true
Line employees need the knowledge of TQM tools. true/false
true
Line employees need the knowledge of TQM tools. true/fasle
true
Price changes are useful for matching the level of demand to the capacity of a facility. true/false
true
The cost of waiting decreases as the service level increases.
true
Harley Davidson
uses work cells to feed its assembly line
