A student takes a multiple-choice quiz with 5 questions, each with four possible answers and only one of them is correct. A passing grade is 60% or better (i.e., answering at least 3 of 5 questions correctly). Suppose that the student was unable to find time to study for the exam and just guesses at each question How many questions would you expect the student to get correct, and what is the standard deviation?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A student takes a multiple-choice quiz with 5 questions, each with four possible answers and only one
of them is correct. A passing grade is 60% or better (i.e., answering at least 3 of 5 questions correctly).
Suppose that the student was unable to find time to study for the exam and just guesses at each
question

How many questions would you expect the student to get correct, and what is the standard deviation?

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