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An office building has two fire detectors. The probability is .02 that any fire detector of this type will fail to go off during a

An office building has two fire detectors. The probability is .02 that any fire detector of this type will fail to go off during a fire. Find the following probabilities:

a. both of these fire detectors will fail to go off in case of a fire.

b. at least one will fail to go off in case of a fire

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