SOLUTION: In a certain class, 40% of students are seniors, 15% of the students are failing, and 10% are seniors who are failing. What is the conditional probability that a student is failing

Question 265192: In a certain class, 40% of students are seniors, 15% of the students are failing, and 10% are seniors who are failing. What is the conditional probability that a student is failing given that he/she is a senior?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In a certain class, 40% of students are seniors, 15% of the students are failing, and 10% are seniors who are failing. What is the conditional probability that a student is failing given that he/she is a senior?
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P(failing|senior) = P(failing and senior)/P(senior) = 0.10/0.40 = 1/4
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Cheers,
Stan H.
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