A manufacturer of disk drives for notebook computerswants an MTBF of at least 50,000 hours. Recent test results forI 0 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 runningat 60,000 hours. Determine the following:a) Percentage of fa iluresb) N umber of fai lures per unit-hour of operating timec) MTBF at this point in the testing
A manufacturer of disk drives for notebook computerswants an MTBF of at least 50,000 hours. Recent test results forI 0 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 runningat 60,000 hours. Determine the following:a) Percentage of fa iluresb) N umber of fai lures per unit-hour of operating timec) MTBF at this point in the testing
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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| A manufacturer of disk drives for notebook computers wants an MTBF of at least 50,000 hours. Recent test results for I 0 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 60,000 hours. Determine the following: a) Percentage of fa ilures b) N umber of fai lures per unit-hour of operating time c) MTBF at this point in the testing |
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