Dormitory A Dormitory Has Two Activating Devices in Each Fire Detector.One

question 61

Short Answer

Dormitory
A dormitory has two activating devices in each fire detector.One is smoke activated and has a probability of .98 of sounding an alarm when it should.The second is a heat sensitive activator and has a probability of .95 of operating when it should.Each activator operates independently of the other.Presume a fire starts near a detector.
-What is the probability that only the smoke activator functions?

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