Operations Management - 2 DVDs
11th Edition
ISBN: 9780132863322
Author: HEIZER
Publisher: PEARSON
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Chapter 17, Problem 2P
Summary Introduction
To determine: The overall reliability of the whole testing process.
Introduction: Reliability is the probability that a product can perform over a specific period. It is the consistency of the product to perform in the same way for a particular period of time.
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QUESTION 3 A production line has three machines A, B, and C, with reliabilities of .99, .96, and .93, respectively. The machines are arranged so that if one breaks down, the others must shut down. Engineers are weighing two alternative designs for increasing the line’s reliability. Plan 1 involves adding an identical backup line, and plan 2 involves providing a backup for each machine. In either case, three machines (A, B, and C) would be used with reliabilities equal to the original three. a. Which plan will provide the higher reliability? b. Explain why the two reliabilities are not the same. c. What other factors might enter into the decision of which plan to adopt?
QUESTION 7
Write any TWO disadvantages of asking open questions in a Questionnaire.
List any TWO advantages of PILOTING a questionnaire.
Briefly explain any ONE method of measuring reliability.
Question 5
A.How can benchamrks assist in performing quality assurance?
B. List at least FIVE (5) tools that can be used to control quality
Chapter 17 Solutions
Operations Management - 2 DVDs
Ch. 17 - Prob. 1DQCh. 17 - Prob. 2DQCh. 17 - Prob. 3DQCh. 17 - Prob. 4DQCh. 17 - Prob. 5DQCh. 17 - Prob. 6DQCh. 17 - Prob. 7DQCh. 17 - Prob. 8DQCh. 17 - Prob. 9DQCh. 17 - Prob. 10DQ
Ch. 17 - Prob. 1PCh. 17 - Prob. 2PCh. 17 - Prob. 3PCh. 17 - Prob. 4PCh. 17 - Prob. 5PCh. 17 - Prob. 6PCh. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Prob. 10PCh. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - Prob. 13PCh. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Prob. 18PCh. 17 - Prob. 19PCh. 17 - Prob. 1VCCh. 17 - Prob. 2VCCh. 17 - Prob. 3VC
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- Question 20 We want to compare the quality of three Tablet products: Tablet Product A has a Mean Time Between Failures (MTBF) 10,000 hours, and a Mean Time To Repair (MTTR) or 10 hours. Product B has a MTBF of 11,000 hours and a MTTR of 11 hours. Product C has a MTBF of 12,000 hours and MTTR of 12 hours. Which tablet has better Availability? Group of answer choices a. Tablet A b. Tablet B c. Tablet C d. The Availability of Tablets A, B and C are equal e. Impossible to determinearrow_forwardQuestion No 3: Rectify the error if any in the following in-text citation based on APA guidelines. Perceived risk, which is defined as an individual’s degree of expected uncertainty associated with the result of using a certain technology (Tan and Lau, 2016). It includes five main groupings: service performance, monetary, time, societal and security risks (Jacoby and Kaplan, 1972; Mha, 2015). Perceived risks in turn increase consumer hesitation and generate negative attitudes toward a service (Kalaiarasi and Srividya, 2012). This breeds a sense of anxiety and unease that in turn decreases the perceived value and usefulness of a technology, thereby diminishing adoption intentions (Kumar, Arcand, Tai, 2012). Indeed, as stated by (Kazi and Mannan, 2013), electronic banking applications are associated with high perceived risks because consumers fear the exchange of personal financial information and services through online applications Moreover, studies have indicated that a high…arrow_forwardQuestion: List two importance of having a good internal control system in an organization. reqiured: please answer this question by listing the two correct importance of having a good internal control system in an organization.arrow_forward
- Question number 1 : Read the following case study and answer the underlined question.The retail giant Walmart is trying to compel its suppliers to “go green” as part of its efforts to build a more environmentally sustainable global supply chain. As it did with promoting EDI and RFIDs in the early stages of those technologies, Walmart is leading the curve with its sustainability efforts. On an occasion, Walmart’s CEO, Lee Scott, told a large gathering in China, “A company that cheats on overtime and on the age of its labor, that dumps its scraps and chemicals into our rivers, that does not pay its taxes or honor its contracts—will ultimately cheat on the quality of its products. And cheating on the quality of products is the same as cheating on customers. We will not tolerate that at Walmart.” As part of this initiative, Walmart will survey its 100,000 global suppliers and ultimately create a “sustainability product index,” which will allow the company to evaluate suppliers on their…arrow_forwardQUESTION 1(a) I. Explain the concept of reliability and function of reliability engineering. II. Give three (3) reasons for studying reliability III. State three (3) major steps to take to accomplish reliability engineering IV. What is product life cycle? State the stages involved in product life product.arrow_forwardAssignment 1: Ethical Issue Evaluation Which design principle for crash decisions seems the most ethical and why: to minimize harm, protect the driver over the other drivers, treat everyone equally, hand back control to the driver, follow the law or something else?arrow_forward
- Question 3 The three (3) scenarios are related to the control function. Explain the type of controlthat is applied in each of the scenario.Scenario 1The chief engineer schedules repair and service of all machinery needed in theproduction line every two months. Scenario 2Patients in the ICU wards in hospitals are monitored round the clock by nurses. Scenario 3 Following reports of malfunctioning airbags in certain Toyota cars, Toyota re-calledspecific Toyota models to have the airbags replaced.arrow_forwardQ ( s) A system must attain a reliability of not less than 0.90 for a 2 hour mission. The reliability is to be demonstrated at an 80% confidence level. In an actual test, the test was terminated at the 4th failure and 150 hours had been accumulated. Does this observation show that the required reliability has been attained ?arrow_forwardWhich of the following is TRUE regarding computer-aided design? Question 16Answer A. It is an obsolete technology. B. It is the use of information technology to control machinery. C. It is the use of computers to interactively design products and prepare engineering documentation. D. It is too expensive to use in most manufacturing and design settings. E. It results in longer development cycles for virtually all productsarrow_forward
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