EP PRIN.OF OPERATIONS MGMT.-MYOMLAB
10th Edition
ISBN: 9780134183848
Author: HEIZER
Publisher: PEARSON CO
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Question
Chapter 17, Problem 5P
a)
Summary Introduction
To determine: The percent of failues.
b)
Summary Introduction
To determine: The number of failures per unit hour.
c)
Summary Introduction
To determine: The mean time between failures at this point in testing.
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A manufacturer of disk drives for notebook computers wants an MTBF of at least 45,000 hours. Recent test
results for 10 units were one failure at 10,000 hours, another
at 25,000 hours, and two more at 45,000 hours. The remaining
units were still running at 50,000 hours. Determine the following:
a) Percent of failures
b) Number of failures per unit-hour
c) MTBF at this point in the testing
Which errors manifest most often during performance testing?
15) Given this three-component system and associated reliabilities
What is the system reliability?
Group of answer choices
a) 0.4772
b) 0.0068
c) 0.5228
d) 0.9225
e) 0.9933
Chapter 17 Solutions
EP PRIN.OF OPERATIONS MGMT.-MYOMLAB
Ch. 17 - Prob. 1EDCh. 17 - Prob. 1DQCh. 17 - Prob. 2DQCh. 17 - Prob. 3DQCh. 17 - Prob. 4DQCh. 17 - What is the trade-off between operator-performed...Ch. 17 - Prob. 6DQCh. 17 - Prob. 7DQCh. 17 - Prob. 8DQCh. 17 - Prob. 9DQ
Ch. 17 - Prob. 10DQCh. 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 - What is the reliability of the system shown?Ch. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - Rick Wing, salesperson for Wave Soldering Systems,...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - What are the expected number of yearly breakdowns...Ch. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - Prob. 21PCh. 17 - Prob. 1CSCh. 17 - Prob. 2CSCh. 17 - Prob. 3CS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- Robert Klassan Manufacturing, a medical equipment manufacturer, subjected 90 heart pacemakers to 4,000 hours of testing. Halfway through the testing, 6 pacemakers failed. The failure rate in terms of: Percent of Failure is Confirmed by my Professor to be 6.7% Number of Failures per unit-hour is Confirmed by my Professor to be 0.00001724 failures per hour Can you show me how my professor got these answers? Also what is the Number of Failures per unit year = ? Failures per year (round your response to four decimal places. I know that the answer is Not 3. My professor said the answer wasn't that simple.arrow_forwardA manufacturer of household kettles subjected 50 kettles to 10 000 hours of testing. Test results for the 50 kettles show that there were two failures at 3500 hours, two failures at 4800 hours, one failure at 8600 hours, and two more failures at 9000 hours. 4.1.1 Calculate the failure rate percentage (FR %).4.1.2 Calculate the number of failures per unit-hour (FR N).4.1.3 Calculate the MTBF at this point in testing.arrow_forwardExplain why a product or system might have an overall reliability that is low even though it is com- prised of components that have fairly high reliabilities.arrow_forward
- A manufacturer of disk drives for notebook computers wants a MTBF of at least 50,000 hours. Recent test results for 15 units were one failure at 12,000 hours, one at 20,000 hours, and one more at 48,000 hours. The remaining units were still running at 60,000 hours. Determine the following: a) Percent of failures = % (enter your response as a percentage rounded to one decimal place).arrow_forwardThe Technomax Electronics Company has been receiving a lot of customer complaints and returns of a DVD player that it manufactures. When a DVD is pushed into the loading mechanism, it can stick inside and it is difficult to get the DVD out. Consumers will try to pull the DVD drawer out with their fingers or pry it out with an object such as a knife, pencil, or screwdriver, frequently damaging the DVD or hurting themselves. What are the different costs of poor quality (internal fail and external failure) associated with this quality problem? What are the prevention costs of quality assurance that might be associated with this quality problem?arrow_forwardMagTech assembles tape players from four major compo-nents arranged as follows:The components can be purchased from three differentvendors, who have supplied the following reliability data:a. If MagTech has decided to use only one vendor tosupply all four components, which vendor should beselected?b. Would your decision change if all the components wereassembled in series?arrow_forward
- What is the reliability of the following parallel pro-duction process? R1 5 0.95, R2 5 0.90, R3 5 0.98.arrow_forwardBoth alpha and beta are measures of reliability. Both alpha and beta are measures of reliability. True Falsearrow_forwardA manufacturer of disk drives for notebook computers wants a MTBF of at least 50,000 hours. Recent test results for 15 units were one failure at 12,000 hours, one at 20,000 hours, and one more at 48,000 hours. The remaining units were still running at 60,000 hours. Determine the following: Number of failures per unit-hour of operating time = failures per hour (round your response to eight decimal places).arrow_forward
- What is the difference between UAT (User Acceptance Testing) and System testing?arrow_forwardEven after taking all appropriate steps to produce a high integrity system, some remaining faults will remain. How would you ensure system safety and reliability in practical approaches?arrow_forwardClassify each of the following as either a Type I error or a Type II error:b. Releasing a guilty person from jailarrow_forward
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