問題詳情
25. The probability that a randomly chosen male has a blood circulation problem is 0.25. Males who have a blood circulation problem are twice as likely to be smokers as those who do not have a blood circulation problem.
Calculate the probability that a male has a blood circulation problem, given that he is a smoker.
(A) 1/4
(B) 1/3
(C) 2/5
(D) 1/2
(E) 2/3
參考答案
答案：C
統計：A:0,B:0,C:1,D:0,E:0
難度：計算中