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Bayes' Theorem and a Survey of Probability Concepts

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A Survey of Probability Concepts

Dr. Stallter has been teaching basic statistics for many years. She knows that 80 percent of the students will complete the assigned problems. She has also determined that among those who do their assignments, 90 percent will pass the course. Among those students who do not do their homework, 60 percent will pass. Mike Fishbaugh took statistics last semester from Dr. Stallter and received a passing grade. What is the probability that he completed the assignments? What is the probability that he completed the assignments?

One-fourth of the residents of the Burning Ridge Estates leave their garage doors open when they are away from home. The local chief of police estimates that 5 percent of the garages with open doors will have something stolen, but only 1 percent of those closed will have something stolen. If a garage is robbed, what is the probability the doors were left open?

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Solution Summary

The solution provides step by step method for the calculation of probability using Bayes' theorem. Formula for the calculation and interpretations of the results are also included.

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