OPERATIONS MANAGEMENT (LL)-W/ACCESS
17th Edition
ISBN: 9781260037821
Author: CACHON
Publisher: MCG
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Chapter 9, Problem 6CQ
Summary Introduction
To determine: The correct option for the given information.
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Which of the following statements about Pareto diagrams is correct?a. The Pareto diagram shows the possible root causes of a problem along with the numberof defect occurrences.b. The Pareto diagram shows the process capability index over time.c. The Pareto diagram shows the mean of a random sample at various points in time.d. The Pareto diagram shows a visual representation of binary outcome variables.
Following the announcement of a major quality problem, the share price of a companyfalls substantially. This decrease is a result of assignable cause variation. True or false?a. Trueb. False
match each variable types with its description: variables: Process input variable, Process output variable, Critical to quality, Key process output variable, Key process intput variable, description (a) a product or process requirement that is no matter to the customer (b) a product or process knob or control that affects characteristics of importance to the customer (c) a product or process knob or control that has no impact on the process (d) a product or process requirement that must be present to make the customer happy but that the customer does not know to explicitly specify (e) a product or process requirement specifically requested by the customer
Chapter 9 Solutions
OPERATIONS MANAGEMENT (LL)-W/ACCESS
Ch. 9 - Prob. 1CQCh. 9 - Prob. 2CQCh. 9 - Prob. 3CQCh. 9 - Prob. 4CQCh. 9 - Prob. 5CQCh. 9 - Prob. 6CQCh. 9 - Prob. 7CQCh. 9 - Prob. 8CQCh. 9 - Prob. 9CQCh. 9 - Prob. 10CQ
Ch. 9 - Prob. 11CQCh. 9 - Prob. 12CQCh. 9 - Prob. 13CQCh. 9 - Prob. 14CQCh. 9 - Prob. 15CQCh. 9 - Prob. 16CQCh. 9 - Prob. 17CQCh. 9 - Prob. 18CQCh. 9 - Prob. 1PACh. 9 - Prob. 2PACh. 9 - Prob. 3PACh. 9 - Prob. 4PACh. 9 - Prob. 5PACh. 9 - Prob. 6PACh. 9 - Prob. 7PACh. 9 - Prob. 8PACh. 9 - Prob. 9PACh. 9 - Prob. 10PACh. 9 - Prob. 11PACh. 9 - Prob. 12PACh. 9 - Prob. 1CCh. 9 - Prob. 2C
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- The mean processing time (x¯) of a job on a machine is 11 minutes with a standard deviation (σ)of 0.23 minutes. Upper specification limit (USL) is 11.5 minutes, whereas lower specification limit (LSL) is 10.5 minutes. What is the process capability ratio (cp) for this process? Is the process capable? Cp=1, not capable Cp=1.5, capable Cp=0.72, capable Cp=1, capable Cp=0.72, not capablearrow_forwardOther things remaining the same, and assuming that X is smaller than USL and larger than LSL, if the standard deviation (σ) of the process increases, process capability index (Cpk) of the process will: Stay the same Will always increase Will always decrease Will sometimes increasearrow_forwardWhich of the following definitions describes a robust process?a. A process is robust if it can tolerate variation in input and environmental variableswithout producing a defect.b. A process is robust if it has a lot of automation built in.c. A process is robust if it uses control charts.d. A process is robust if its process capability index is greater than 1.arrow_forward
- If the process capability index (Cp) calculates to be 1.4 then you would conclude a.The process is not stable b.The process is stable c.The process is not capable d.The process is capable e.The process should be scrappedarrow_forwardWhich of the following statements is not true of Quality control? a. Quality control aims at detecting defects rather than preventing the defects. b. Quality control means the recognition and removal of identifiable causes and defects, and variables from the set standards c. The aim of quality control is to provide products which are dependable, satisfactory and economical. d. A quality control system is designed to ensure economical production of products of uniform quality which is acceptable to the customer.arrow_forwardWhich of the following statements about Pareto diagrams is correct?a. The Pareto diagram shows the possible root causes of a problem but does not show thefrequency of defect occurrences.b. The Pareto diagram shows the defects in order from most commonly occurring to leastcommonly occurring.c. The Pareto diagram shows the mean of a random sample at various points in time.d. The bars in the Pareto diagram have, on average, roughly the same height.arrow_forward
- The mean service time (x¯) of a hairdresser is 18 minutes with a standard deviation (σ) of 2 minutes. Upper specification limit (USL) is 22 minutes, whereas lower specification limit (LSL) is 15 minutes for this process. What is the process capability index (cpk) for this process? Is the process capable? Cpk=0.67, capable Cpk=1.5, capable Cpk=0.67, not capable Cpk=0.5, capable Cpk=0.5, not capablearrow_forwardS1: The major beneficiary of an internal audit is the management.S2: An auditor should design the written audit program so that all material transactions will be selected for testing. Group of answer choices Only S2 is correct. Both S1 and S2 are correct. Both S1 and S2 are incorrect. Only S1 is correct.arrow_forwardWhich of the following statements is NOT true about the process capability ratio? a. The process capability ratio is a ratio for determining whether a process meets design specifications. b. The process capability ratio is computed as the difference of the upper and lower specification limits divided by six standard deviations. c. The process capability ratio is a ratio of the specification to the process variation. d. A capable process has a process capability ratio less than one.arrow_forward
- Which of the following is NOT true when a process is in-control select one: a. the process includes a high precentage of satisfactory results b. the process includes random variation c. All points lie within the control limits d. the process includes variation due to special or assignable causesarrow_forwardControl chart for variables help to measure non-conformance in the process. true Falsearrow_forwardA manager wanted to predict how much rework time would result from taking a manufacturing line from producing 8 hours a day to 24 hours a day. The manager carefully analyzed three years of performance from manufacturing lines that operated 8 hours a day to make the prediction. The manager is at risk of making what type of error? a Data overfitting error. b Extrapolation beyond the range error. c Outlier error. d Either a type I or type II error.arrow_forward
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