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STAT 201 questions and answers Graded A+
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STAT 201 questions and answers Graded A+ What is the definition of probability? The likelihood of an event occurring, expressed as a number between 0 and 1. What are the key probability rules? 1. Any probability is between 0 and 1. 2. The sum of probabilities of all outcomes is 1. 3. For disjoint events, P(A or B) = P(A) + P(B). What does it mean for an event to be disjoint? Two events are disjoint if they cannot occur at the same time. What is a probability distribution? A model that describes the set of possible outcomes and the probability of each outcome. What is the 68-95-99.7 Rule? In a Normal distribution, approximately 68% of d
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