In a society of 5000 people, 1200 are above 30 years of age and 3000 are female. Out of the 1200 who are above 30, 200 are female. Suppose after a person is chosen you are told that the person is a female. What is the probability that she is above 30?
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Go and ask in that society
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Answer:
total 200 females are above 30
pickes up 1
p(E) = favorable outcome/total outcome
= 1/200
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