Chapter 5 1. With a random experiment or a random sample or other random phenomenon (such as a simulation), the probability of a particular outcome is the proportion of times that the outcome would occur in a long run of observations. 2. Different trials of a random phenomenon are independent if the outcome of any one trial is not affected by the outcome of any other trial. 3. For a random phenomenon, the sample space is the set of all possible outcomes. 4. An event is a subset of the sample space. 5. The complement of an event A consists of all outcomes in the sample space that are not in A. It is denoted by Ac. 6. Two events, A and B, are disjoint if they do not have any common outcomes. 7. The intersection of A and B consists of the outcomes that are in both A and B. 8. The union of A and B consists of outcomes that are in A or B. In probability, “A or B” denotes that A occurs or B occurs or both occur.
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