Suppose 10 athletes are running in a race and exactly 2 of them are taking banned drugs. An investigator randomly selects 2 athletes for drug-testing. What is the probability that neither of the cheaters will be caught?
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Suppose 10 athletes are running in a race and exactly 2 of them are taking banned drugs. An investigator randomly selects 2 athletes for drug-testing. What is the probability that neither of the cheaters will be caught? (A) 16/25 (B) 4/5 (C) 3/5 (D) 28/45
Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
This question is on Sampling with and without replacement, part of Probability and Bayes' theorem in Statistics.
Drawing from a finite population and the hypergeometric probabilities that result.
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Question from the DSE 2010 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.