MATH 1131 Lecture Notes - Lecture 4: Social Security Number, Venn Diagram, Breakfast Cereal

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Experiments, sample spaces, and events: an experiment is an activity in which there are at least two possible outcomes and the result of the activity cannot be predicted with absolute certainty, here are some examples of experiments, 1. Roll a six-sided die and record the number that lands face up. We cannot say with certainty that the number face up will be a 1, or a 2, etc. , so this activity is an experiment: 2. Using a radar gun, record the speed of a pitch at a red sox baseball game. We"(cid:396)e (cid:374)ot su(cid:396)e (cid:449)hethe(cid:396) the pit(cid:272)h (cid:449)ill (cid:271)e a fast(cid:271)all, (cid:272)u(cid:396)(cid:448)e(cid:271)all, slide(cid:396), et(cid:272). A(cid:374)d even if we steal the signal from the catcher, we cannot predict the speed of the pitch with certainty: 3. Count the number of patients who arrive at the emergency room of a city hospital during a 24-hour period.