5.1 notes

# 5.1 notes - STAT3000 Chapter 5 Probability Theory Note...

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STAT3000 Chapter 5: Probability Theory Note : Although we are interested in probability because of its usefulness in statistics, the mathematics of chance is important in many fields of study. This chapter presents a bit more of the theory of probability. _______________________________________________ _ STAT3000 Section 5.1: General Probability Rules Venn diagram – a pictorial method for presenting the sample space. The sample space is shown as a closed figure, labeled S. Each event is represented by a circle and labeled accordingly. DISJOINT EVENTS NONDISJOINT EVENTS 59

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union – A or B is the event that occurs if either A or B or both occur in a single performance of the experiment. P(A or B) = P(A U B) intersection – A and B is the event that occurs if both A and B occur on a single performance of the experiment. P(A and B) = P(A ∩ B) 60
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General Addition Rule P(A or B) = P(A) + P(B) – P(A and B) 5.13 Consolidated Builders has bid on two large construction projects. The company president
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5.1 notes - STAT3000 Chapter 5 Probability Theory Note...

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