# Statistics 4.1.pdf - Section 4.1 Basic Concepts of...

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Section 4.1Basic Concepts of ProbabilityEvent:A collection of outcomes of a procedure.Sample Space:The set of all possible outcomes of a procedurePdenotes probabilityAdenotes an event)(APdenotes the probability of eventAoccurringExamples1.On a multiple choice test, each question has 3 possible answers. If you make a random guess on the firstquestion, what is the probability that you are correct?2.A die with 12 sides is rolled. What is the probability of rolling a number less than 11?3.A bag contains 6 red marbles, 3 blue marbles, and 5 green marbles. If a marble is randomly selected from thebag, what is the probability that it is blue?4.If a person is randomly selected, find the probability that his or her birthday is in May. Ignore leap years.
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