Suppose you take a 20 question multiple choice test, where each question has four choices. You guess randomly on each question. a. What is your expected score? b. What is the probability you get 10 or more questions correct?

College Algebra
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ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
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Chapter9: Counting And Probability
Section: Chapter Questions
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3.16
Suppose you take a 20 question multiple choice test, where each question has four choices. You guess
randomly on each question.
a. What is your expected score?
b. What is the probability you get 10 or more questions correct?
Transcribed Image Text:3.16 Suppose you take a 20 question multiple choice test, where each question has four choices. You guess randomly on each question. a. What is your expected score? b. What is the probability you get 10 or more questions correct?
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