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Redundant monitoring means that a signal is sent in multiple forms or paths to reach its intended target. For example, an alarm may be set up to send multiple signals to a security company, each independent of each other in case of failure along one path. If an alarm sends off four signals down different paths, and each has a 0.65 probability of reaching the security company, what is the probability that at least one signal successfully reaches the security company?

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  1. 1 May, 11:11
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    Answer:.985

    Explanation: p (at least 1 success) = 1 - P (no successes) = 1 -.35^4 =.985
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