SOLUTION: hi, the probability of two students failing is .1 where student A will fail .5 and student b will fail .2 , what is the probability that both students will pass? I know the an

Algebra ->  Probability-and-statistics -> SOLUTION: hi, the probability of two students failing is .1 where student A will fail .5 and student b will fail .2 , what is the probability that both students will pass? I know the an      Log On


   

Question 561061: hi,
the probability of two students failing is .1 where student A will fail .5 and student b will fail .2 , what is the probability that both students will pass? I know the answer is .4 please tell me how to calculate this.
thanks
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
P(A passes) = 1 - .5 = .5
P(B passes) = 1 - .2 = .8

P(A and B pass) = (.5)(.8) = .4