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1、Managing Quality: Integrating the Supply Chain, 6e (Foster)Chapter 12 Statistically Based Quality Improvement for Attributes 1)attributes relate to whether or not a particular product or service performs as it is supposed to.A) StructuralB) SensoryC) PerformanceD) TemporalE) EthicalAnswer: CDiff: 1L
2、earning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.1 Discuss the differences between attributes and variables.AACSB: Application of KnowledgeType: Concept2)attributes relate to senses of touch, smell, taste, and sound.A) StructuralB) SensoryC) PerformanceD) ConsensualE) Eth
3、icalAnswer: BDiff: 1Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.1 Discuss the differences between attributes and variables.AACSB: Application of KnowledgeType: Concept3)attributes relate to time.A) StructuralB) SensoryC) PerformanceD) TemporalE) TactileAnswer: DDiff
4、: 1Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.1 Discuss the differences between attributes and variables.AACSB: Application of KnowledgeType: Concept31) Defectives are monitored using.A) c chartsB) g chartsC) u chartsD) p chartsE) d chartsAnswer: DDiff: 2Learning O
5、utcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Application of KnowledgeType: ConceptUse the following table to answer the question(s) below.Sample#123456789K)# Scratched 32012210132) A producer of contact lenses regularly takes sample
6、s of 100 lenses and inspects them for scratches. If a lens has a single scratch, it cannot be sold. The results of 10 samples are shown. What is the average proportion defective?A) 0.012B) 0.014C) 0.020D) 0.028E) 0.035Answer: BDiff: 3Learning Outcome: Apply basic statistical process control (SPC) me
7、thodsLO: 12.3 Interpret attributes control charts.AACSB: Analytical ThinkingType: Application33) A producer of contact lenses regularly takes samples of 100 lenses and inspects them for scratches. If a lens has a single scratch, it cannot be sold. The results of 10 samples are shown. What sample is
8、out of control?E) none of the aboveAnswer: EDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Analytical Thinking Type: ApplicationUse the following table to answer the question(s) below.Sample #12345678910# Discarded213
9、101058766534) A manufacturer of FAX machines checks samples of 50 units for functionality at the conclusion of the assembly process. The results of 10 samples are shown.What is the average proportion defective?A) 0.07B)0.14C) 0.21D) 0.28E) 0.35Answer: BDiff: 3Learning Outcome: Apply basic statistica
10、l process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Analytical ThinkingType: Application35) A manufacturer of FAX machines checks samples of 50 units for functionality at the conclusion of the assembly process. The results of 10 samples are shown below:Sample #12345678
11、910# Discarded11699487765What sample is out of control?A)1B)2C)3D)4E) none of the aboveAnswer: BDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Analytical ThinkingType: ApplicationUse the following table to answer the
12、question(s) below.Sample#1234567891c)# Bad Hoods 911150793981636) The producers of the Yugo automobile periodically inspect samples of 80 hoods for dents and scratches. A single flaw in a hood renders it unsuitable for installation in one of their fine automobiles. The results of the last 10 samples
13、 are shown.Calculate the standard error, s忸 for the np chart.A) 7.75B) 0.10C) 0.31D) 2.78E) 2.95Answer: DDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Analytical ThinkingType: Application37) The producers of the Yugo
14、 automobile periodically inspect samples of 80 hoods for dents and scratches. A single flaw in a hood renders it unsuitable for installation in one of their fine automobiles. The results of the last 10 samples are shown.What sample is out of control?A)1B)3C)5D)4E) 10Answer: DDiff: 3Learning Outcome:
15、 Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Analytical ThinkingType: ApplicationUse the following table to answer the question(s) below.Bench# 1234567891c)# Drips 910344111413111338) A parks and recreation worker counts the number of pain
16、t drips on each standard size park bench. The results from the last 10 benches are shown.If the Parks Department decides to make a c chart, what bench number is out of control?x7 K)z A B c D13E) none of the aboveAnswer: EDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsL
17、O: 12.3 Interpret attributes control charts.AACSB: Analytical ThinkingType: Application39) A defect is an irregularity or problem with a larger unit.Answer: TRUEDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Applicati
18、on of KnowledgeType: Concept40) A p chart can be used whether or not there is a constant sample size.Answer: TRUEDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Application of KnowledgeType: Concept41) An np chart can
19、be used whether or not the sample sizes are the same.Answer: FALSEDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Application of KnowledgeType: Concept42) The p chart is a process chart that is used to graph the propor
20、tion of items in a sample that are defective.Answer: TRUEDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Application of KnowledgeType: Concept43) The np chart is a graph of the number of defectives in a subgroup.Answer
21、: TRUEDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Application of KnowledgeType: Concept44) The u chart is a graph of the number of defects per unit.Answer: FALSEDiff: 2Learning Outcome: Apply basic statistical proc
22、ess control (SPC) methodsLO: 12.3 Interpret attributes control charts.AACSB: Application of KnowledgeType: Concept45) The lower control limit for a p chart cannot be lower than zero.Answer: TRUEDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attribute
23、s control charts.AACSB: Application of KnowledgeType: Concept46) The shape of the process line in a p chart and an np chart plot is always identical if the same data are used.Answer: TRUEDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.3 Interpret attributes contr
24、ol charts.AACSB: Application of KnowledgeType: ConceptUse the following table to answer the question(s) below.Sample#1234567891c)# Scratched 320122101247) A producer of contact lenses regularly takes samples of 100 lenses and inspects them for scratches. If a lens has a single scratch, it cannot be
25、sold. The results of 10 samples are shown. What are the lower and upper 3-sigma control limits?A) (-0.021,0.012)B) (-0.021,0.000)C) (0.012, 0.035)D) (0.000, 0.035)E) (0.000, 0.049)Answer: EDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.4 Develop p, np, u, and c
26、charts.AACSB: Analytical ThinkingType: ApplicationUse the following table to answer the question(s) below.Sample# 1234567891c)# Discarded 213101058766548) A manufacturer of FAX machines checks samples of 50 units for functionality at the conclusion of the assembly process. The results of 10 samples
27、are shown.What are the lower and upper 3-sigma control limits?A) (-0.01,0.09)B) (-0.01,0.00)C) (-0.01,0.29)D) (0.00, 0.09)E) (0.00, 0.29)Answer: EDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.4 Develop p, np, u, and c charts.AACSB: Analytical ThinkingType: Appl
28、icationUse the following table to answer the question(s) below.Sample #12345678910# Bad Hoods911150793981649) The producers of the Yugo automobile periodically inspect samples of 80 hoods for dents and scratches. A single flaw in a hood renders it unsuitable for installation in one of their fine aut
29、omobiles. The results of the last 10 samples are shown.What is the center line for the np chart?A) 2.4B)5.8C) 7.2D)8.7E) 10.1Answer: DDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.4 Develop p, np, u, and c charts.AACSB: Analytical ThinkingType: Application50) T
30、he producers of the Yugo automobile periodically inspect samples of 80 hoods for dents and scratches. A single flaw in a hood renders it unsuitable for installation in one of their fine automobiles. The results of the last 10 samples are shown.What are the lower and upper control limits for the np c
31、hart?A) (-8.35, 2.8)B) (2.8, 8.35)C) (0.3, 17.1)D) (8.7, 17.1)E) (0.4, 8.7)Answer: CDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.4 Develop p, np, u, and c charts.AACSB: Analytical ThinkingType: ApplicationUse the following table to answer the question(s) below
32、.Bench# 1234567891c)# Drips 910344111413111351) A parks and recreation worker counts the number of paint drips on each standard size park bench. The results from the last 10 benches are shown.If the Parks Department decides to make a c chart, what should the center line be?A) 6.9B) 8.4C) 9.2D) 10.7E
33、) 11.3Answer: CDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.4 Develop p, np, u, and c charts.AACSB: Analytical ThinkingType: Application52) A parks and recreation worker counts the number of paint drips on each standard size park bench. The results from the la
34、st 10 benches are shown.If the Parks Department decides to make a c chart, what should the lower and upper 3-sigma control limits be?A) (-9.2, 9.2)B) (0.0, 20)C) (0.1, 18.3)D) (3.1, 13.1)E) (3.1, 18.3)Answer: CDiff: 3Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.4 Dev
35、elop p, np, u, and c charts.AACSB: Analytical ThinkingType: Application53) What is a np chart and how is it similar to or different than a p chart?Answer: The np chart is a graph of the number of defectives (or nonconforming units) in a subgroup. The np chart requires the sample size of each subgrou
36、p to be the same each time a sample is drawn. When subgroup sizes are equal, either the p or np chart can be used. They are essentially the same chart. Some people find the np chart easier to use because it reflects integer numbers rather than proportions. The uses for the np chart are essentially t
37、he same as the uses for the p chart.Diff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.4 Develop p, np, u, and c charts.AACSB: Application of KnowledgeType: Concept54) What is a w chart and how is it similar to or different than a c chart?Answer: The u chart is a gr
38、aph of the average number of defects per unit. Contrast this with the c chart, which usually shows the actual number of defects per standardized unit. The u chart allows for the units sampled to be different sizes, areas, heights and so on; and allows for different numbers of units in each sample sp
39、ace. On the other hand, the c chart is used when inspecting the same size sample spaces. Nonetheless, the uses and the formulas for the u chart are the same as the c chart.Diff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.4 Develop p, np, u, and c charts.AACSB: App
40、lication of KnowledgeType: Concept55) The reliability model that shows that products are more likely to fail either very early in their useful life or very late in their useful life is called the.A) half-moon hazard functionB) saucer-shaped hazard functionC) half-circle hazard functionD) cone-shaped
41、 hazard functionE) bathtub-shaped hazard function Answer: EDiff: 1Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.6 Perform reliability analysis.AACSB: Application of KnowledgeType: Concept56) The vertical axis on the bathtub function is.A) failure rateB) timeC) predict
42、ed lifeD) design reliabilityE) useful lifeAnswer: ADiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.6 Perform reliability analysis.AACSB: Application of KnowledgeType: Concept57) The horizontal axis on the bathtub function is.A) failure rateB) timeC) useful lifeD)
43、 design reliabilityE) predicted lifeAnswer: BDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.6 Perform reliability analysis.AACSB: Application of KnowledgeType: Concept58) Reliability models assume statistical independence between failure events. This means thatA
44、) components do not failB) if one component fails, the entire system failsC) parallel systems are unnecessaryD) the failure of one component does not influence another to failE) series systems are unnecessaryAnswer: DDiff: 2Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 1
45、2.6 Perform reliability analysis.AACSB: Application of KnowledgeType: Concept4)attributes answer whether a service provider is empathetic or if their accounting systems report properly.A) StructuralB) SensoryC) PerformanceD) TemporalE) EthicalAnswer: EDiff: 1Learning Outcome: Apply basic statistical
46、 process control (SPC) methodsLO: 12.1 Discuss the differences between attributes and variables.AACSB: Application of KnowledgeType: Concept5)attributes relate to the physical characteristics of a particular product or service.A) StructuralB) SensoryC) PerformanceD) TemporalE) EthicalAnswer: ADiff: 1Learning Outcome: Apply basic statistical process control (SPC) methodsLO: 12.1 Discuss the differences between attributes and variables.AACSB: Application of KnowledgeType: Concept6) Attributes that are more internal and engineering-oriented are called attributes.A