SOLUTION: The probability that a particular type of smoke alarm will function properly and sound an alarm in the presence of smoke is 0.80. Suppose you have two such alarms in your house and

Question 932589: The probability that a particular type of smoke alarm will function properly and sound an alarm in the presence of smoke is 0.80. Suppose you have two such alarms in your house and they operate independently. If a burnt hamburger causes your house to fill with smoke, what is the probability that at least one of the two alarms will sound?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
p(work) = .80, n = 2
........
P(x ≥ 2) = 1 - P(x ≤ 1) = 1 - binomcdf(2,.8,1) = 1 - .36 = .94 0r 94%
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