<PRE><B>Question 328696</B>
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&lt;= 8) = binomcdf(9,0.9,8) = 0.6126
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Cheers,
stan H.
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