The final exam in a sociology course consists of 100 multiple-choice questions. Each question has 5 possible

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The final exam in a sociology course consists of 100 multiple-choice questions. Each question has 5 possible answers, and only 1 of them is correct. An unprepared student makes random guesses for all of the answers.

a. Find the mean and standard deviation for the number of correct answers for such students.

b. Would it be unusual for a student to pass the exam by guessing and getting at least 60 correct answers? Why or why not?

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Elementary Statistics

ISBN: 9780321500243

11th Edition

Authors: Mario F. Triola

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Question Posted: Feb 24, 2020 06:00 AM

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The final exam in a sociology course consists of 100 multiple-choice questions. Each question has 5 possible

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a Let us assume that the random variable X denotes that the numb...View the full answer

Elementary Statistics

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