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In a classroom there are 100 students, of whom: 40 are men and 60 are women,...

In a classroom there are 100 students, of whom: 40 are men and 60 are women, 30 people wear glasses, and 15 are men and wear glasses. If we randomly select a student from that course:
a. What is the probability that she is a woman and does not wear glasses?
b. If we know that the selected student does not wear glasses, what is the probability that he is a man?

Math   Statistics-And-Probability   
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Answer #1

Therefore If we know that the selected student does not wear glasses, then its probability that he is a man is 5/14 = 0.3571

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