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The principle of redundancy is used when system reliability is improved through redundant or backup components. Assume that a student's alarm clock has a 11.7%

The principle of redundancy is used when system reliability is improved through redundant or backup components. Assume that a student's alarm clock has a 11.7% daily failure rate. If the student has two such alarms clocks, what is the probability that they both fail on the morning of an important final exam

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