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Unformatted text preview: 36225  Handout for Lecture # 5September 5, 2008Last time....Axioms of Probability1.P(A)2.P(S) =13.AB==P(AB) =P(A) +P(B)If S has an infinite number of outcomes....4.Let A1,A2,A3, ....be events such that AiAj=for each i6=j (pairwise disjoint), then:P[i=1Ai=Xi=1P(Ai)Comment:13=P(A) =1P(A)(the Complement Rule)1Finding Probabilities of Events  The Sample Point MethodList all the possible outcomes of the experiment.Assign reasonable probabilities to each outcome.Find all the sample points in an event of interest, A.P(A) =sum of the probabilities of the outcomes in A.Example 1:Choose a person at random and record his/her blood type.Example 2:There are five candidates for 2 (identical) positions  2 males and 3females.Since all 5 are equally qualified, 2 candidates are selected atrandom. What is the probability that this (fair) selection process willappear to discriminatory?...
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 Spring '11
 finegold
 Statistics, Probability

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