06.1 Cond Prob - Mult - Ind

# 06.1 Cond Prob - Mult - Ind - Today Finish counting and...

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1/5/10 Today Finish counting and multichoose Have read through Chapter 2-4 Conditional probabilities Wed. Homework #2 due Read Chapter 2-5 Multiplication and Total Probability rules

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1/5/10 Conditional Probability It is often useful to be able to calculate the probability of some event given that some other event has occurred. Example Experiment: Flip 3 coins. S = {HHH, HHT, HTH, …}
1/5/10 Conditional Probability The following is very important: Definition of Conditional Probability The above equation is the definition of ) ( ) ( ) | ( B P B A P B A P =

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1/5/10 Conditional Probability Definition of Conditional Probability ) ( ) ( ) | ( B P B A P B A P = A B A
1/5/10 Example 1 Returning to the example above: Flip 3 coins. A = 2 or more heads B = first coin is head What is Pr{A|B}

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## This note was uploaded on 01/04/2010 for the course STATS 1100 taught by Professor Rodriguez during the Spring '08 term at Pittsburgh.

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06.1 Cond Prob - Mult - Ind - Today Finish counting and...

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