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Unformatted text preview: Rule of Multiplication If events A and B come from the same sample space, the probability that both A and B occur is equal to the probability the event A occurs times the probability that B occurs, given that A has occurred P(A B) = P(A) P(BA). Rule of Addition If events A and B come from the same sample space, the probability that event A and/or event B occur is equal to the probability that event A occurs plus the probability that event B occurs minus the probability that both events A and B occur P(A B) = P(A) + P(B)  P(A B). Symbols: P(A B) (both A and B), P(A B) (union, either A or B can occur) Chapter 4 Discrete: countable, Continuous: infinite; cant count)...
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 Fall '08
 Sohn

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