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juniors. a) You pick three students at random, one at a time. What is the probability that all three are junior? b) You pick two students at random, one at a time. What is the probability that the second student is a sophomore, given that the first is a freshman?

juniors. a) You pick three students at random, one at a time. What is the probability that all three are junior? b) You pick two students at random, one at a time. What is the probability that the second student is a sophomore, given that the first is a freshman?

A First Course in Probability (10th Edition)
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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Suppose you have a class with 30 students -10 freshmen, 12 sophomores, and 8 9.. juniors. a) You pick three students at random, one at a time. What is the probability that all three are junior? b) You pick two students at random, one at a time. What is the probability that the second student is a sophomore, given that the first is a freshman?
Transcribed Image Text:Suppose you have a class with 30 students -10 freshmen, 12 sophomores, and 8 9.. juniors. a) You pick three students at random, one at a time. What is the probability that all three are junior? b) You pick two students at random, one at a time. What is the probability that the second student is a sophomore, given that the first is a freshman?
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