# SOC221H5 Lecture Notes - Lecture 5: Mutual Exclusivity

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1 Oct 2017
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## Document Summary

Week #3:lecture + chapter notes (probability: what do we mean by probability: In a game in which, you are told to pay sh. 75, and are return 10 cents rst, and the second time double that, until the coin lands on tails. Q = why don"t the odds reset itself ?: how to obtain a better understanding of probability: Exhaustive events = a set of events are considered exhaustive, if the outcome of a trial must include at least one of these events: Ex: what is the probability of getting either a red and yellow marble. Law #1 = mutually exclusive events i. ii. For r, y, is mutually exclusive = p(r or y) = p(r) + p(y) For r, y, is non mutually exclusive = p(r or y) = p(50 + 20) + p(80 +20) - Law #2 = mutually exclusive + exhaustive = 1. 0.

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