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A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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
Transcribed Image Text:2)
Anne is studying for a history exam covering the
French Revolution that will consist of five essay ques-
tions selected at random from a list of ten the professor
has handed out to the class in advance. Not exactly a
Napoleon buff, Anne would like to avoid researching all
ten questions but still be reasonably assured of getting a
fairly good grade. Specifically, she wants to have at least
an 85% chance of getting at least four of the five ques-
tions right. Will it be sufficient if she studies eight of the
ten questions?
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