Question 181002
A home security system is designed to be triggered in 96% of attempted burglaries. If 7 homes equipped with such a system experience an attempted burglary, find the probability that at least 6 alarms are triggered. Round your answer to four decimal places. 
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It's binomial with n=7, p=0.96 ;  6 <= x <= 7
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P(6 <= x <= 7) = P(x=6) + P(x=7)

= 0.21917 + 0.75145 = 0.9706197...
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Cheers,
Stan H.