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Unformatted text preview: 1 Chapter 15 (Probability Rules!) Skip: It Depends (page 389) to the end of the chapter (we are skipping the most challenging parts of the chapter) Recall (from chapter 14) that a probability is a relative frequency, calculated by dividing the frequency of a given outcome by the total number of possible outcomes. ' ( ) number of A s frequency P event A number of students n = = Two key rules from chapter 14 are: The Addition Rule for Disjoint Events: P(A or B) = P(A) + P(B) The Multiplication Rule for Independent Events: P(A and B) = P(A) * P(B) Suppose the events are not disjoint events: P(A or B) = P(A) + P(B) P(A and B) called the General Addition Rule Suppose the events are not independent events: P(A and B) = P(A) * P(BA) where P(BA) is a conditional probability Called the General Multiplication Rule This rule is not to be tested (skipping this topic) Activity 1: Drawing cards from a full deck....
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This note was uploaded on 11/22/2010 for the course STA 2023 taught by Professor Ripol during the Spring '08 term at University of Florida.
 Spring '08
 Ripol
 Statistics, Probability

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