What is the failure rate of a system composed of three components, each of which can cause a system failure, and which have the following information?

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What type of failure is usually reduced by periodic overhaul and replacement of component parts?
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Corrective maintenance is performed in order to
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Which of the following is NOT a major consideration in performing a human factors analysis?
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A system is turned off every 30 days for 5 minutes for on line maintenance. If the probability of system failure due to hardware failure is negligible, what is the system's unavailability?
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