OPERATIONS MANAGEMENT >C<
14th Edition
ISBN: 9781307701432
Author: Stevenson
Publisher: MCG/CREATE
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Chapter 10, Problem 1CTE
Summary Introduction
To determine: The possible explanations for not finding any errors and the actions to be taken by the manager.
Introduction: Quality is a measure of excellence or a state of being free from deficiencies, defects and important variations. It is obtained by consistent and strict commitment to certain standards to attain uniformity of a product to satisfy consumers’ requirement.
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analysis of the output of a process has suggested that the variability is nonrandom on several occations recently.however each time an investigation has not revealed any assignable causes . what are the some of possible explanations for not finding any causes? what should do the manager do?
Define the term state of statistical control?
Explain how process capability (Cp and Cpk) is statistically useful in Six Sigma?
Chapter 10 Solutions
OPERATIONS MANAGEMENT >C<
Ch. 10.2 - Prob. 1.1RQCh. 10.2 - Prob. 1.2RQCh. 10.4 - Prob. 1.1RQCh. 10.4 - Prob. 1.2RQCh. 10 - Prob. 1DRQCh. 10 - Prob. 2DRQCh. 10 - Prob. 3DRQCh. 10 - Prob. 4DRQCh. 10 - Prob. 5DRQCh. 10 - Prob. 6DRQ
Ch. 10 - Prob. 7DRQCh. 10 - Prob. 8DRQCh. 10 - Prob. 9DRQCh. 10 - Prob. 10DRQCh. 10 - Prob. 11DRQCh. 10 - Prob. 12DRQCh. 10 - Prob. 13DRQCh. 10 - Prob. 14DRQCh. 10 - Prob. 15DRQCh. 10 - Prob. 16DRQCh. 10 - Prob. 1TSCh. 10 - Prob. 2TSCh. 10 - Prob. 3TSCh. 10 - Prob. 1CTECh. 10 - Prob. 2CTECh. 10 - Prob. 3CTECh. 10 - Prob. 4CTECh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11PCh. 10 - Prob. 12PCh. 10 - Prob. 13PCh. 10 - Prob. 14PCh. 10 - Prob. 15PCh. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - A production process consists of a three-step...Ch. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 24PCh. 10 - Prob. 25PCh. 10 - Prob. 26PCh. 10 - Prob. 27PCh. 10 - Prob. 28PCh. 10 - Prob. 29PCh. 10 - Prob. 1.1CQCh. 10 - Prob. 2.1CQCh. 10 - Prob. 2.2CQCh. 10 - Prob. 2.3CQCh. 10 - Prob. 2.4CQ
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- What is assignable cause of variation? How is it applied to statistical application of quality management and how can it be used in business?arrow_forwardInter-State Moving and Storage Company wishes to establish a control chart to monitor the proportion of residential moves that result in written complaints due to late delivery, lost items, or damaged items. A sample of 40 moves is selected for each of the last 12 months. The number of written complaints in each sample is 9, 7, 4, 9, 1, 9, 11, 5, 5, 8, 7, and 15. Number Defective Percent defective 9 18 7 14 4 8 9 18 1 2 9 18 11 22 5 10 5 10 8 16 7 14 15 30 a. Insert the mean proportion defective, UCL, and LCL. (Leave no cells blank - be certain to enter "0" wherever required. Round your intermediate calculations and final answers to 2 decimal places.) Mean proportion defective UCL LCL c. Does it appear that the number of complaints is out of control for any of the months?multiple choice Yes Noarrow_forwardAnalysis of the output of a process has suggested that the variability is nonrandom on several occasions recently. However, each time an investigation of the process has not revealed any assignable causes. What are some of the possible explanations for not finding any causes?arrow_forward
- Analyse the issues described below using root cause analysis techniques. A travel agency has recently lost several medium-sized and large corporate customers due to complaints about poor customer service. The management team of the travel agency decided to appoint a team of analysts to address this problem. The team gathered data by conducting interviews and surveys with current and past corporate customers and gathering customer feedback data that the travel agency has recorded over time. About 2% of customers complained about errors made in their bookings. On one occasion, a customer requested a change to a flight booking. The travel agent wrote an e-mail to the customer suggesting that the change had been made and attached a modified travel itinerary. However, it later turned out that the flight reservation system had not confirmed the modified booking. As a result, the customer was not allowed to board the flight, leading to a series of severe inconveniences for the customer.…arrow_forwardIsidel the below Causal diagram: D Which variables must necessarily be controlled for to identify the effect of X on Y? Do not select variables to control for unless they are necessary to identify effect. OB O It's not possible to identify the effect of X on Y OYarrow_forwardDescribe how to construct process control charts and use them to determine whether a process is out of statistical control.arrow_forward
- Houston North Hospital is trying to improve its image by providing a positive experience for its patients and their relatives. Part of the "image" program involves providing tasty, inviting patient meals that are also healthful. A questionnaire accompanies each meal served, asking the patient, among other things, whether he or she is satisfied or unsatisfied with the meal. A 50-patient sample of the survey results over the past 7 days yielded the following data: Day No. of Unsatisfied Patients Sample Size 1 26 50 2 20 50 3 10 50 4 15 50 5 12 50 6 26 50 7 15 50 The control limits to include 99.73% of the random variation in meal satisfaction are: UCLp= (enter your response as a number between 0 and 1, rounded to three decimal places). LCLp = (enter your response as a number between 0 and 1, rounded to three decimal places).…arrow_forwardA softdrink manufacturing company voluntarily recalled one of its products from the shelves over concerns glass may have gotten into some bottles. Develop a cause-and-effect diagram investigating the possible causes of this quality related problem. Use assumptions in developing your response.arrow_forwardHouston North Hospital is trying to improve its image by providing a positive experience for its patients and their relatives. Part of the "image" program involves providing tasty, inviting patient meals that are also healthful. A questionnaire accompanies each meal served, asking the patient, among other things, whether he or she is satisfied or unsatisfied with the meal. A 100-patient sample of the survey results over the past 7 days yielded the following data: No. of Unsatisfied Day Patients Sample Size 1 24 100 2 22 100 3 8 100 4 15 100 10 100 26 100 7 17 100arrow_forward
- Explain what are two basic assumptions must be satisfied in order to use a process capability index ?arrow_forwardThe Commonwealth Banking Corporation issues a national credit card through its various bank branches in five southeast-ern states. The bank credit card business is highly competitive and interest rates do not vary substantially, so the company decided to attempt to retain its customers by improving cus-tomer service through a reduction in billing errors. The credit card division monitored its billing department process by tak-ing daily samples of 200 customer bills for 30 days and checking their accuracy. The sample results are as follows:Develop a p-chart for the billing process using 3 controllimits and indicate if the process is out of control.arrow_forwardWhat is a Control Chart? Its purpose, strengths and limitations?arrow_forward
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