Fortissimo Posted February 6, 2009 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.
iNow Posted February 7, 2009 Posted February 7, 2009 You may want to try the Homework Help forum. Good luck.
Mr Skeptic Posted February 7, 2009 Posted February 7, 2009 That is also true if A and B are mutually exclusive.
jian Posted February 7, 2009 Posted February 7, 2009 may be you can use a simple diagram to show the relationship. I cannot provide the rigorous proof yet.
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