Probability PuzzlePuzzle: If the probability of observing a car in 20 minutes on a highway is 609/625, what is the probability of observing a car in 5 minutes (assuming constant default probability)? Solution: Probability of not seeing the car in 20 minutes = (1 - 609/625) = 16/625 If P be the probability of not seeing the car in 5 minutes, then PxPxPxP = 16/625 => P = 2/5 => Probability of seeing the car in 5 minutes = (1 - 2/5) = 3/5 |
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