Question

On a Saturday night $20\%$ of all divers is U.S.A. are under the influence of alcohol. The probability that a driver under the influence of alcohol will have an accident is $0.001$. The probability that a sober driver will have an accident is $0.0001$. If a car on a Saturday night smashed into a tree, the probability that the driver was under the influence of alcohol, is?

Answer 1

Hence, Probability that the diver was under the influence of alcohol when the accident happened- $0.001\times 0.20=0.0002$