Ro bert Klassen Manufacturing, a medical equipmentmanufacturer, subjected I 00 heart pacemakers to 5,000 hours oftesting. Ha lfway through the testing, 5 pacemakers fa iled. Whatwas the failure rate in terms of the following:a) Percentage of failu res?b) Number of failures per unit-hour of o perating time?c) Number of failures per unit-year?d) If I, I 00 people receive pacemaker implants, how many unitscan we expect to fa il during the following year?

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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Ro bert Klassen Manufacturing, a medical equipment
manufacturer, subjected I 00 heart pacemakers to 5,000 hours of
testing. Ha lfway through the testing, 5 pacemakers fa iled. What
was the failure rate in terms of the following:
a) Percentage of failu res?
b) Number of failures per unit-hour of o perating time?
c) Number of failures per unit-year?
d) If I, I 00 people receive pacemaker implants, how many units
can we expect to fa il during the following year?
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