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Line 7:
Line 7: − ===Example===+ Line 21:
Line 21: − ===See also===+
clean up & uniformity
where P(AB) is the probability of both events A and B occurring and P(B) is the probability of event B occurring.
where P(AB) is the probability of both events A and B occurring and P(B) is the probability of event B occurring.
==Example==
A bag has 5 red balls and 3 green balls inside it. You pick out a ball and do not replace it in the bag afterwards.
A bag has 5 red balls and 3 green balls inside it. You pick out a ball and do not replace it in the bag afterwards.
In the second case, the question requires a conditional probability: P(red on 2nd draw|red on 1st draw).
In the second case, the question requires a conditional probability: P(red on 2nd draw|red on 1st draw).
==See also==
[[Bayes theorem]]
[[Bayes theorem]]
[[Category:Probability and Statistics]]
[[Category:Probability and Statistics]]