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cheat sheet qba test 2

cheat sheet qba test 2 - Ch 5 Complement rule P(A P(~A)=1...

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Ch. 5 Complement rule: P(A) + P(~A)=1 OR P(A)= 1-P(~A)…probability of an event occurring by subtracting the P of it NOT occurring from 1 Special rule: Mutually exclusive, P(A or B)= P(A)+P(B)……..heads or tails v. general rule of addition P(A or B) = P(A) + P(B) – P(A and B) ….people who have been to Disneyworld AND Busch Gardens Independence: Special rule of mult. (tossing 2 coins) P (A and B) = P(A)P(B) Dependence/conditional probability: General rule of mult. (12 shirts, 9 are white) P(A and B)=P(A)P(BIA) Permutation: how many different ways can one group of objects be ordered? (order matters…putting stuff together in a certain order) Combination: order doesn’t matter, (choosing 3 people for a committee) Ch. 6 Mean=expected value Pgs 186-187 Binomial (P remains the same, only 2 possible outcomes): As of May 1992, 32% of all sport utility vehicles sold in the United States were manufactured by Ford Motor. Assume that all of the sport utility vehicles currently owned in the United States are purchased in the United States.
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