Practical Management Science
Practical Management Science
6th Edition
ISBN: 9781337406659
Author: WINSTON, Wayne L.
Publisher: Cengage,
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A manufacturer of disk drives for notebook computers wants a MTBF of at least 50,000 hours. Recent test results for 12 units were two failures at 8,000 hours, two at 24,000 hours, and two more at 40,000 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). b) Based on the given information, total hours = hours (enter your response as a whole number). c) MTBF at this time in testing = hours (round your response to the nearest whole number).
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Transcribed Image Text:A manufacturer of disk drives for notebook computers wants a MTBF of at least 50,000 hours. Recent test results for 12 units were two failures at 8,000 hours, two at 24,000 hours, and two more at 40,000 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). b) Based on the given information, total hours = hours (enter your response as a whole number). c) MTBF at this time in testing = hours (round your response to the nearest whole number).
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Step 3: Determine the total hours:
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Step 4: Determine the MTBF at this time in testing:
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