SOLUTION: A home security system is designed to have a 90% reliability rate. Suppose that nine homes equipped with this system experience an attempted burglary. The probability that eight o

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Question 328696: A home security system is designed to have a 90% reliability rate. Suppose that nine homes equipped with this system experience an attempted burglary.
The probability that eight or fewer alarms are triggered is?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A home security system is designed to have a 90% reliability rate. Suppose that nine homes equipped with this system experience an attempted burglary.
The probability that eight or fewer alarms are triggered is?
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Binomial with n = 9 and p = 0.9
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Using a TI-84 I get:
P(x<= 8) = binomcdf(9,0.9,8) = 0.6126
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Cheers,
stan H.