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Applied Mathematics
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Topic Topic: The probability that at least one alarm operates in an emergency Post ReplyNew Question
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Joined: 26 June 2005
Posts: 918
Posted: 16 November 2005 at 10:38am | IP Logged Quote System

A warning system installation consists of two independent alarms that have probabilities of operating in an emergency of 0.95 and 0.90 respectively. Find the probability that at least one alarm operates in an emergency.
    A.   0.995
    B.   0.85
    C.   0.855
    D.   0.90
    E.   0.95
    F.   0.975
 QUIZ QUESTION #1393 created by Guest on 15 November 2005 at 3:46pm

Correct answer: A    Correct clicks: 29.90%  Wrong clicks: 70.10%
    A.   [29 clicks 29.90%] 
    B.   [13 clicks 13.40%] 
    C.   [21 clicks 21.65%] 
    D.   [11 clicks 11.34%] 
    E.   [8 clicks 8.25%] 
    F.   [15 clicks 15.46%] 
Please discuss this quiz question.
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