SOLUTION: If 10% of cars approaching intersection turn left, what is probability that at least one out of three cars chosen at random will turn left?

Question 505215: If 10% of cars approaching intersection turn left, what is probability that at least one out of three cars chosen at random will turn left?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If 10% of cars approaching intersection turn left, what is probability that at least one out of three cars chosen at random will turn left?
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Binomial Problem with n = 3 and p = 0.1
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P(1<= x <=3) = 1 - P(x = 0)
= 1 - 0.9^3
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= 1 - 0.7290
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= 0.2710
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Cheers,
Stan H.
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