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OpenStudy (anonymous):
A machine needs 2 of its gears replaced. You find 2 gears, one manufactured 5 years ago and the other manufactured 10 years ago. The specifications sheet says that the chance of failure is 5% after 5 years and increases to 8% after 10 years. If the gears on the machine are in no way linked to each other, what are the chances that both will fail? 0.2% 0.9% 40% 7.5% 0.4%
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OpenStudy (melodycrazysouthern):
id say 7.5%
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