SOLUTION: out of 20 students in a statistics class, 3 students are failing in the course. if 4 students from the class are picked up at random, what is the probability that one of the failin

Question 782772: out of 20 students in a statistics class, 3 students are failing in the course. if 4 students from the class are picked up at random, what is the probability that one of the failing students will be among them.
Answer by psbhowmick(878) (Show Source): You can put this solution on YOUR website!
A = Event of selection of at least one student from the group of 3 failed students
A' = Event of selection of no student from the group of 3 failed students
P(A)=1-P(A') = 1 - 17C4/20C4 = 1 - 0.49 = 0.51
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