A student takes a multiple-choice test with 25 questions. Each question has 5 possible choices for answers. If the student takes the test with no knowledge of the material (i.e., guesses), find the: (a) Probability that they get exactly 8 questions correct (b) Expected number of correct answers

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A student takes a multiple-choice test with 25 questions. Each question has 5
possible choices for answers. If the student takes the test with no knowledge of the
material (i.e., guesses), find the:
(a) Probability that they get exactly 8 questions correct
(b) Expected number of correct answers
(c) Standard deviation of the number of correct answers
Transcribed Image Text:A student takes a multiple-choice test with 25 questions. Each question has 5 possible choices for answers. If the student takes the test with no knowledge of the material (i.e., guesses), find the: (a) Probability that they get exactly 8 questions correct (b) Expected number of correct answers (c) Standard deviation of the number of correct answers
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