Two urns, contain red and blue balls. The first urn has 3 red and 7 blue balls, while the second urn has 6 red and 4 blue balls. An urn is selected at random and a ball is drawn from this urn. If the ball is red, the conditional probability that it was drawn from the second urn is
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Two urns, contain red and blue balls. The first urn has 3 red and 7 blue balls, while the second urn has 6 red and 4 blue balls. An urn is selected at random and a ball is drawn from this urn. If the ball is red, the conditional probability that it was drawn from the second urn is (A) 1/2 (B) 3/10 (C) 2/3 (D) More information is required
Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
This question is on Total probability and Bayes' theorem, part of Probability and Bayes' theorem in Statistics.
Reversing a conditional probability and updating beliefs from evidence.
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Question from the JNU SIS 2011 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.