SOLUTION: In a certain college 30% of the students failed math, 20% failed english, and 15% failed both math and english. If a student failed english, what is the probability that he failed

Algebra ->  Probability-and-statistics -> SOLUTION: In a certain college 30% of the students failed math, 20% failed english, and 15% failed both math and english. If a student failed english, what is the probability that he failed       Log On


   



Question 250075: In a certain college 30% of the students failed math, 20% failed english, and 15% failed both math and english. If a student failed english, what is the probability that he failed math?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
In a certain college 30% of the students failed math, 20% failed english, and 15% failed both math and english. If a student failed english, what is the probability that he failed math?
--------------------------
P(m|e) = P(m AND e)/P(e)
-----------------------------
P(m|e) = 0.15/0.20 = 0.075
==================================
Cheers,
Stan H.