Test taking probability and independent events | Precalculus | Khan Academy - By Khan Academy
Have you ever taken a test and discovered you have no choice but to guess on a couple of problems? In this example problem, we are considering the probability of two independent events occurring.
Test taking probability and independent events | Precalculus | Khan Academy is a free educational video by Khan Academy.It helps students in grades HS practice the following standards HSS.CP.A.2,HSS.MD.A.3,.
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1. HSS.CP.A.2 : Understand that two events A and B are independent if the probability of A and Boccurring together is the product of their probabilities, and use this characterization to determine if they are independent..
2. HSS.MD.A.3 : Develop a probability distribution for a random variable defined for a sample space in which theoretical probabilities can be calculated; find the expected value. For example, find the theoretical probability distribution for the number of correct answers obtained by guessing on all five questions of a multiple-choice test where each question has four choices, and find the expected grade under various grading schemes..
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