17.5 A manufacturer of disk drives for notebook computers wants an MTBF of at least 50,000 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 60,000 hours. Determine the following: (A)Percentage of failures (B)Number of failures per unit-hour of operating time (C)MTBF at this point in the testing
17.5 A manufacturer of disk drives for notebook computers wants an MTBF of at least 50,000 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 60,000 hours. Determine the following: (A)Percentage of failures (B)Number of failures per unit-hour of operating time (C)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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-Answer Problem 17.5 (a, b, & c) at the end chapter 17. Show all the steps in your responses to each of the four questions. As always, clearly each response (e.g., 17.5 (a); 17.5 (b); 17.5 (c) and show all steps taken to arrive at the answers.
17.5 A manufacturer of disk drives for notebook computers wants an MTBF of at least 50,000 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 60,000 hours. Determine the following:
(A)Percentage of failures
(B)Number of failures per unit-hour of operating time
(C)MTBF at this point in the testing
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