Date: 08/07/98 at 07:25:23 From: DiCicco's Subject: Re: Linear equations and probabilities Hi Dr. Math, Thank you very much for your last answer. I have another question. Let A and B be two events where P(A) = 0.6, P(B) = 0.2, and P(A intersect B) = 0.12. Are the events A and B independent? Why? If you can tell me how and why of this question I would truly appreciate it. Thanks, Vanessa
Date: 08/07/98 at 12:40:40 From: Doctor Anthony Subject: Re: Linear equations and probabilities The test for independence of two events A and B is as follows: If P(A and B) = P(A) x P(B) then A and B are independent. In your example we have: P(A and B) = 0.12 P(A) = 0.6 P(B) = 0.2 So P(A) x P(B) = 0.6 x 0.2 = 0.12 = P(A and B) and therefore A and B are independent. - Doctor Anthony, The Math Forum Check out our web site! http://mathforum.org/dr.math/
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