question archive Robert Klassan Manufacturing, a medical equipment manufacturer, subjected 100 heart pacemakers to 5,000 hours of testing
Robert Klassan Manufacturing, a medical equipment manufacturer, subjected 100 heart pacemakers to 5,000 hours of testing
Subject:ManagementPrice:2.87 Bought7
Robert Klassan Manufacturing, a medical equipment manufacturer, subjected 100 heart pacemakers to 5,000 hours of testing. Halfway through the testing, 5 pacemakers failed. What was the failure rate in terms of the following:
a) Percentage of failures?
b) Number of failures per unit-hour?
c) Number of failures per unit-year?
d) If 1,100 people receive pacemaker implants, how many units can we expect to fail during the following year?
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Answer:
a) 5/100= 0.05*100= 5%
b) 0.05*5000= 250 within 5000 hours
per hour= 250/5000= 0.05 units per hour
c) 0.05*24*365= 438 units per year
d) 0.05*1100= 55 units
