SOLUTION: The probability of a car having a defective brake light is 1/10. In a survey of 150 cars, what is the probability that 20 cars or more have a defective brake light?

Question 593213: The probability of a car having a defective brake light is 1/10.
In a survey of 150 cars, what is the probability that 20 cars or more have a defective brake light?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The probability of a car having a defective brake light is 1/10.
In a survey of 150 cars, what is the probability that 20 cars or more have a defective brake light?
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Binomial Problem with n = 150 and p(defect) = 0.1
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P(20<= x <=150) = 1-binomcdf(150,0.1,19) = 0.1130
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Cheers,
Stan H.
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