A class has two exams. You know that 80% of the students passed the first exam and that 40% of the students did not pass the second exam. If a student passed the first exam, then the probability that they also passed the second exam is 5/8 . a) What is the probability that a randomly selected student passed both exams? b) What is the probability that a randomly selected student did not pass either exam?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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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A class has two exams. You know that 80% of the students passed the first exam and that 40% of the students did not pass the second exam. If a student passed the first exam, then the probability that they also passed the second exam is 5/8 .

a) What is the probability that a randomly selected student passed both exams?

b) What is the probability that a randomly selected student did not pass either exam?

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