Stats Ch5

# Stats Ch5 - Chapter 5 Probability Extremely context...

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Chapter 5 1 Chapter 5 Probability Extremely context dependent

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Chapter 5 2 Experiment Outcome Sample Space Event
Chapter 5 3 Probability Rules 0 P (A) ≤ 1 Every probability is between 0 and 1 P (S) = 1 Add the probability of all outcomes= 1 P (A`) = 1 − P (A) Compliment Rule Everything except A

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Chapter 5 4 Assigning Probability Empirical Count the number of favorable outcomes and divide by the total number. Classical Probability= Fav. Outcomes/Total Outcomes Doesn’t matter how much the favorable outcome happens Say chicken steak or pork. Classical prob. Says it is 1/3 no matter how many more people eat steak than chicken or vice versa. Subjective When your just guessing and you have no real data.
Chapter 5 5 Venn Diagrams and Set Notation Union P (A or B) P(A U B) Intersection P(A and B) P(A N B)

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Chapter 5 6 General Law of Addition P (A or B) = P (A) + P (B) - P (A and B)
Chapter 5 7 Mutually Exclusive Events

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