Question 317333
Machine has 9 identical components which function independently. 
The probability that a component will fail is 0.2. 
The machine will stop working if more than three components fail. 
Find the probability that the machine will be working.
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P(fail) = 0.2
P(not fail) = 0.8
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Binomial Problem with n = 9 
P(less than 4 components fail) = binomcdf(9,0.2,3) = 0.9144
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Cheers,
Stan H.
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