Fortissimo Posted February 6, 2009 Share Posted February 6, 2009 Guys I'm doing an introduction to statistics course and I'm sort of stumped. I can manage the calculation aspect as its more straight forward but when u have to prove stuff, I'm hopeless. Any help with this please, Prove that if event A and event B are not mutually exclusive, then P(A or B) = P(AUB) = P(A) + P(B) - P(AnB) Would appreciate any help. Thanks. Link to comment Share on other sites More sharing options...
iNow Posted February 7, 2009 Share Posted February 7, 2009 You may want to try the Homework Help forum. Good luck. Link to comment Share on other sites More sharing options...
Mr Skeptic Posted February 7, 2009 Share Posted February 7, 2009 That is also true if A and B are mutually exclusive. Link to comment Share on other sites More sharing options...
jian Posted February 7, 2009 Share Posted February 7, 2009 may be you can use a simple diagram to show the relationship. I cannot provide the rigorous proof yet. Link to comment Share on other sites More sharing options...
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