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A multiple-choice test consists of 10 questions, each with 4 possible answers but only one which is correct. What is the probability that an unprepared will, by chance get All correct answers Exactly 5 correct answers At most 8 correct answers

A multiple-choice test consists of 10 questions, each with 4 possible answers but only one which is correct. What is the probability that an unprepared will, by chance get All correct answers Exactly 5 correct answers At most 8 correct answers

College Algebra
College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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A multiple-choice test consists of 10 questions, each with 4 possible answers but only one which is correct. What is the probability that an unprepared will, by chance get All correct answers Exactly 5 correct answers . At most 8 correct answers . At least 8 correct answers Compute the expected number of correct answers and the standard deviation.
Transcribed Image Text:A multiple-choice test consists of 10 questions, each with 4 possible answers but only one which is correct. What is the probability that an unprepared will, by chance get All correct answers Exactly 5 correct answers . At most 8 correct answers . At least 8 correct answers Compute the expected number of correct answers and the standard deviation.
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