Lesson plan

Determine whether events are independent by using conditional probability

teaches Common Core State Standards CCSS.Math.Content.HSS-CP.A.3 http://corestandards.org/Math/Content/HSS/CP/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3

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Big Ideas: Two events are independent if the occurrence of one does not affect the occurrence of the other. Events A and B are independent whenever P(B|A) = P(B). Students were formally introduced to probability in seventh grade with the standard 7.SP-5. This lesson connects independence of events with conditional probability. It provides an additional way to determine whether two events are independent. This activity directly builds upon previous lessons " Develop an understanding of conditional probability by examining some examples" and "A formula for computing conditional probability." These previous lessons help students develop an understanding of the concept of conditional probability. This particular lesson connects conditional probability with independence of events. This lesson leads to the content related standard S-CP.5.