At a large university, the Statistics Department has tried
Chapter 0, Problem 6.72(choose chapter or problem)
At a large university, the Statistics Department has tried a different text during each of the last three quarters. During the fall quarter, 500 students used a book by Professor Mean; during the winter quarter, 300 students used a book by Professor Median; and during thespring quarter, 200 students used a book by ProfessorMode. A survey at the end of each quarter showed that200 students were satisfied with the text in the fall quarter,150 in the winter quarter, and 160 in the spring quarter.a. If a student who took statistics during one of thesethree quarters is selected at random, what is the probabilitythat the student was satisfied with the textbook?b. If a randomly selected student reports being satisfiedwith the book, is the student most likely to have usedthe book by Mean, Median, or Mode? Who is the leastlikely author? (Hint: Use Bayes rule to compute threeprobabilities.)
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