A certain undergraduate university consists of 35% freshmen, 28% sophomores, 25% Juniors, and the rest seniors. You learn that the probability a freshman will drop out during the current year is .12, the probability a sophomore will drop out during the current year is .08, and the probability a junior will drop out during the current year is .06. For some reason the drop-out rate for seniors was not reported. However, you learn that the dropout probability for all undergraduates is .088. What is the probability that a senior will drop out during the current year?

A certain undergraduate university consists of 35% freshmen, 28% sophomores, 25% Juniors, and the rest seniors. You learn that the probability a freshman will drop out during the current year is .12, the probability a sophomore will drop out during the current year is .08, and the probability a junior will drop out during the current year is .06. For some reason the drop-out rate for seniors was not reported. However, you learn that the dropout probability for all undergraduates is .088. What is the probability that a senior will drop out during the current year?

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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Need help with Question 2.
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