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現在確定有65%的把握確定這個嫌犯有犯案。在審辦的過程中,一個證人出面指證 嫌犯有85%的機會是左撇子。假設有23%的人口數都是左撇子,而嫌犯也是左撇子 請問在獲得證人的資訊後,嫌犯犯案的機率變成多少? 因為怕自己翻譯的不對,所以題目原文也貼上來 A judge is 65% sure that a suspect has committed a crime. During the course of the trial a witness convinces the judge that there is an 85% chance that the criminal is left-handed. If 23% of the population is left-handed and the suspect is also left-handed, with this new information, how certain should the judge be of the guilt of the suspect? 請各位板友幫我解決這個問題 謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.37.122.235