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Grade Complaints Two of the mathematics professors at Enormous State University are Professor A (known for easy grading) and Professor F (known for tough grading). Last semester, roughly two-thirds of Professor F's class consisted of former students of Profes A; these students apparently felt encouraged by their (utterly undeserved) high grades. (Professor F's own former students had fled in droves to Professor A's class to try to shore up their grade point averages.) At the end of the semester, as might have been predict all of Professor A's former students wound up with a C- or lower. The rest of the students in the class-former students of Professor F who had decided to "stick it out"-fared better, and three-fifths of them earned higher than a C-. After discovering what had befall them, all the students who earned C- or lower got together and decided to send a delegation to the Department Chair to complain that their grade point averages had been ruined by this callous and heartless beast! The contingent was to consist of 10 representative selected at random from among them. How many of the 10 would you estimate to have been former students of Professor A? students

Grade Complaints Two of the mathematics professors at Enormous State University are Professor A (known for easy grading) and Professor F (known for tough grading). Last semester, roughly two-thirds of Professor F's class consisted of former students of Profes A; these students apparently felt encouraged by their (utterly undeserved) high grades. (Professor F's own former students had fled in droves to Professor A's class to try to shore up their grade point averages.) At the end of the semester, as might have been predict all of Professor A's former students wound up with a C- or lower. The rest of the students in the class-former students of Professor F who had decided to "stick it out"-fared better, and three-fifths of them earned higher than a C-. After discovering what had befall them, all the students who earned C- or lower got together and decided to send a delegation to the Department Chair to complain that their grade point averages had been ruined by this callous and heartless beast! The contingent was to consist of 10 representative selected at random from among them. How many of the 10 would you estimate to have been former students of Professor A? students

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.3: Conditional Probability; Independent Events; Bayes' Theorem
Problem 80E
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Grade Complaints Two of the mathematics professors at Enormous State University are Professor A (known for easy grading) and Professor F (known for tough grading). Last semester, roughly two-thirds of Professor F's class consisted of former students of Profes A; these students apparently felt encouraged by their (utterly undeserved) high grades. (Professor F's own former students had fled in droves to Professor A's class to try to shore up their grade point averages.) At the end of the semester, as might have been predict all of Professor A's former students wound up with a C- or lower. The rest of the students in the class-former students of Professor F who had decided to "stick it out"-fared better, and three-fifths of them earned higher than a C-. After discovering what had befalle them, all the students who earned C- or lower got together and decided to send a delegation to the Department Chair to complain that their grade point averages had been ruined by this callous and heartless beast! The contingent was to consist of 10 representative selected at random from among them. How many of the 10 would you estimate to have been former students of Professor A? students
Transcribed Image Text:Grade Complaints Two of the mathematics professors at Enormous State University are Professor A (known for easy grading) and Professor F (known for tough grading). Last semester, roughly two-thirds of Professor F's class consisted of former students of Profes A; these students apparently felt encouraged by their (utterly undeserved) high grades. (Professor F's own former students had fled in droves to Professor A's class to try to shore up their grade point averages.) At the end of the semester, as might have been predict all of Professor A's former students wound up with a C- or lower. The rest of the students in the class-former students of Professor F who had decided to "stick it out"-fared better, and three-fifths of them earned higher than a C-. After discovering what had befalle them, all the students who earned C- or lower got together and decided to send a delegation to the Department Chair to complain that their grade point averages had been ruined by this callous and heartless beast! The contingent was to consist of 10 representative selected at random from among them. How many of the 10 would you estimate to have been former students of Professor A? students
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