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試卷名稱：110年 - 110 國立政治大學_碩士班招生考試_ 國際經營與貿易學系:統計學#106074
年份：110年
科目：研究所、轉學考(插大)◆統計學
25. In country B, men's longevity are investigated and the following results are found: 1. Probability that a man lives at least 70 years is 77%； 2. Probability that a man lives at least 80 years is 48%. What is the conditional probability that a man's age is at least 80 years old given that he bas just celebrated his 70th birthday?
(A)
(B)0.48；
(C)0.77；
(D)1；
(E)None of the above is correct. e, a and c.