Q: On a midterm exam, students X, Y and Z forgot to sign their papers. Professor knows that they can write a good exam with probabilities 0.8, 0.7, and 0.5, respectively. After the grading, he notices that two unsigned exams are good and one is bad. Given this information, and assuming that students worked independently of each other, what is the probability that the bad exam belongs to student Z?
Q: On a midterm exam, students X, Y and Z forgot to sign their papers. Professor knows that they can write a good exam with probabilities 0.8, 0.7, and 0.5, respectively. After the grading, he notices that two unsigned exams are good and one is bad. Given this information, and assuming that students worked independently of each other, what is the probability that the bad exam belongs to student Z?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Q: On a midterm exam, students X, Y and Z forgot to sign their papers. Professor knows that
they can write a good exam with probabilities 0.8, 0.7, and 0.5, respectively. After the grading,
he notices that two unsigned exams are good and one is bad. Given this information, and
assuming that students worked independently of each other, what is the
exam belongs to student Z?
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