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Math
Discrete Mathematics With Applications5th Edition

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Chapter 9.9, Problem 32ES
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Discrete Mathematics With Applicat...

5th Edition
EPP + 1 other
ISBN: 9781337694193

Solutions

Chapter
Section
Problem 1TY
Problem 2TY
Problem 3TY
Problem 4TY
Problem 1ES
Problem 2ES
Problem 3ES
Problem 4ES
Problem 5ES
Problem 6ES
Problem 7ES
Problem 8ES
Problem 9ES
Problem 10ES
Problem 11ES
Problem 12ES
Problem 13ES
Problem 14ES
Problem 15ES
Problem 16ES
Problem 17ES
Problem 18ES
Problem 19ES
Problem 20ES
Problem 21ES
Problem 22ES
Problem 23ES
Problem 24ES
Problem 25ES
Problem 26ES
Problem 27ES
Problem 28ES
Problem 29ES
Problem 30ES
Problem 31ES
Problem 32ES
Problem 33ES
Problem 34ES
BuyFindarrow_forward

Discrete Mathematics With Applicat...

5th Edition
EPP + 1 other
ISBN: 9781337694193
Textbook Problem
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A person takes a multiple-choice exam in which each question has four possible answers. Suppose that the person has no idea about the answers to three of the questions and simply chooses randomly for each one.
a. What is the probability that the person will answer all three questions correctly?
b. What is the probability that the person will answer exactly two questions correctly?
c. What is the probability that the person will answer exactly one question correctly?
d. What is the probability that the person will answer no questions correctly?
e. Suppose that the person gets one point of credit for each correct answer and that 1/3 point is deducted for each incorrect answer. What is the expected value of the person’s score for the three questions?

To determine

To find out the probability that the student answers all three questions correctly.

Explanation

Given information:

All questions have four choices for the answer. Person has no idea about the answer choices.

Calculation:

According to the given information the following things can be written

p=probability that student answers the question correctlyp=14q=probability 

To determine

To find out the probability that the student answers exactly two questions correctly.

To determine

To find out the probability that the student answers exactly one question correctly.

To determine

To find out the probability that the student answers no questions correctly.

To determine

To find out the expected value of the person’s score for the three questions.

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Chapter 9.9,
Problem 31ES
Chapter 9.9,
Problem 33ES
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Chapter 9 Solutions

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Sect-9.1 P-1TYSect-9.1 P-2TYSect-9.1 P-3TYSect-9.1 P-4TYSect-9.1 P-1ESSect-9.1 P-2ESSect-9.1 P-3ESSect-9.1 P-4ESSect-9.1 P-5ESSect-9.1 P-6ES
Sect-9.1 P-7ESSect-9.1 P-8ESSect-9.1 P-9ESSect-9.1 P-10ESSect-9.1 P-11ESSect-9.1 P-12ESSect-9.1 P-13ESSect-9.1 P-14ESSect-9.1 P-15ESSect-9.1 P-16ESSect-9.1 P-17ESSect-9.1 P-18ESSect-9.1 P-19ESSect-9.1 P-20ESSect-9.1 P-21ESSect-9.1 P-22ESSect-9.1 P-23ESSect-9.1 P-24ESSect-9.1 P-25ESSect-9.1 P-26ESSect-9.1 P-27ESSect-9.1 P-28ESSect-9.1 P-29ESSect-9.1 P-30ESSect-9.1 P-31ESSect-9.1 P-32ESSect-9.1 P-33ESSect-9.2 P-1TYSect-9.2 P-2TYSect-9.2 P-3TYSect-9.2 P-4TYSect-9.2 P-5TYSect-9.2 P-6TYSect-9.2 P-1ESSect-9.2 P-2ESSect-9.2 P-3ESSect-9.2 P-4ESSect-9.2 P-5ESSect-9.2 P-6ESSect-9.2 P-7ESSect-9.2 P-8ESSect-9.2 P-9ESSect-9.2 P-10ESSect-9.2 P-11ESSect-9.2 P-12ESSect-9.2 P-13ESSect-9.2 P-14ESSect-9.2 P-15ESSect-9.2 P-16ESSect-9.2 P-17ESSect-9.2 P-18ESSect-9.2 P-19ESSect-9.2 P-20ESSect-9.2 P-21ESSect-9.2 P-22ESSect-9.2 P-23ESSect-9.2 P-24ESSect-9.2 P-25ESSect-9.2 P-26ESSect-9.2 P-27ESSect-9.2 P-28ESSect-9.2 P-29ESSect-9.2 P-30ESSect-9.2 P-31ESSect-9.2 P-32ESSect-9.2 P-33ESSect-9.2 P-34ESSect-9.2 P-35ESSect-9.2 P-36ESSect-9.2 P-37ESSect-9.2 P-38ESSect-9.2 P-39ESSect-9.2 P-40ESSect-9.2 P-41ESSect-9.2 P-42ESSect-9.2 P-43ESSect-9.2 P-44ESSect-9.2 P-45ESSect-9.2 P-46ESSect-9.2 P-47ESSect-9.3 P-1TYSect-9.3 P-2TYSect-9.3 P-3TYSect-9.3 P-4TYSect-9.3 P-5TYSect-9.3 P-1ESSect-9.3 P-2ESSect-9.3 P-3ESSect-9.3 P-4ESSect-9.3 P-5ESSect-9.3 P-6ESSect-9.3 P-7ESSect-9.3 P-8ESSect-9.3 P-9ESSect-9.3 P-10ESSect-9.3 P-11ESSect-9.3 P-12ESSect-9.3 P-13ESSect-9.3 P-14ESSect-9.3 P-15ESSect-9.3 P-16ESSect-9.3 P-17ESSect-9.3 P-18ESSect-9.3 P-19ESSect-9.3 P-20ESSect-9.3 P-21ESSect-9.3 P-22ESSect-9.3 P-23ESSect-9.3 P-24ESSect-9.3 P-25ESSect-9.3 P-26ESSect-9.3 P-27ESSect-9.3 P-28ESSect-9.3 P-29ESSect-9.3 P-30ESSect-9.3 P-31ESSect-9.3 P-32ESSect-9.3 P-33ESSect-9.3 P-34ESSect-9.3 P-35ESSect-9.3 P-36ESSect-9.3 P-37ESSect-9.3 P-38ESSect-9.3 P-39ESSect-9.3 P-40ESSect-9.3 P-41ESSect-9.3 P-42ESSect-9.3 P-43ESSect-9.3 P-44ESSect-9.3 P-45ESSect-9.3 P-46ESSect-9.3 P-47ESSect-9.3 P-48ESSect-9.3 P-49ESSect-9.4 P-1TYSect-9.4 P-2TYSect-9.4 P-3TYSect-9.4 P-3ESSect-9.4 P-4ESSect-9.4 P-5ESSect-9.4 P-6ESSect-9.4 P-7ESSect-9.4 P-8ESSect-9.4 P-9ESSect-9.4 P-10ESSect-9.4 P-11ESSect-9.4 P-12ESSect-9.4 P-13ESSect-9.4 P-14ESSect-9.4 P-15ESSect-9.4 P-16ESSect-9.4 P-17ESSect-9.4 P-18ESSect-9.4 P-19ESSect-9.4 P-20ESSect-9.4 P-21ESSect-9.4 P-22ESSect-9.4 P-23ESSect-9.4 P-24ESSect-9.4 P-25ESSect-9.4 P-26ESSect-9.4 P-27ESSect-9.4 P-28ESSect-9.4 P-29ESSect-9.4 P-30ESSect-9.4 P-31ESSect-9.4 P-32ESSect-9.4 P-33ESSect-9.4 P-34ESSect-9.4 P-35ESSect-9.4 P-36ESSect-9.4 P-37ESSect-9.4 P-38ESSect-9.4 P-39ESSect-9.4 P-40ESSect-9.5 P-1TYSect-9.5 P-2TYSect-9.5 P-3TYSect-9.5 P-4TYSect-9.5 P-5TYSect-9.5 P-1ESSect-9.5 P-2ESSect-9.5 P-3ESSect-9.5 P-4ESSect-9.5 P-5ESSect-9.5 P-6ESSect-9.5 P-7ESSect-9.5 P-8ESSect-9.5 P-9ESSect-9.5 P-10ESSect-9.5 P-11ESSect-9.5 P-12ESSect-9.5 P-13ESSect-9.5 P-14ESSect-9.5 P-15ESSect-9.5 P-16ESSect-9.5 P-17ESSect-9.5 P-18ESSect-9.5 P-19ESSect-9.5 P-20ESSect-9.5 P-21ESSect-9.5 P-22ESSect-9.5 P-23ESSect-9.5 P-24ESSect-9.5 P-25ESSect-9.5 P-26ESSect-9.5 P-27ESSect-9.5 P-28ESSect-9.5 P-29ESSect-9.5 P-30ESSect-9.6 P-1TYSect-9.6 P-2TYSect-9.6 P-3TYSect-9.6 P-1ESSect-9.6 P-2ESSect-9.6 P-3ESSect-9.6 P-4ESSect-9.6 P-5ESSect-9.6 P-6ESSect-9.6 P-7ESSect-9.6 P-8ESSect-9.6 P-9ESSect-9.6 P-10ESSect-9.6 P-11ESSect-9.6 P-12ESSect-9.6 P-13ESSect-9.6 P-14ESSect-9.6 P-15ESSect-9.6 P-16ESSect-9.6 P-17ESSect-9.6 P-18ESSect-9.6 P-19ESSect-9.6 P-20ESSect-9.6 P-21ESSect-9.7 P-1TYSect-9.7 P-2TYSect-9.7 P-3TYSect-9.7 P-4TYSect-9.7 P-5TYSect-9.7 P-6TYSect-9.7 P-7TYSect-9.7 P-1ESSect-9.7 P-2ESSect-9.7 P-3ESSect-9.7 P-4ESSect-9.7 P-5ESSect-9.7 P-6ESSect-9.7 P-7ESSect-9.7 P-8ESSect-9.7 P-9ESSect-9.7 P-10ESSect-9.7 P-11ESSect-9.7 P-12ESSect-9.7 P-13ESSect-9.7 P-14ESSect-9.7 P-15ESSect-9.7 P-16ESSect-9.7 P-17ESSect-9.7 P-18ESSect-9.7 P-19ESSect-9.7 P-20ESSect-9.7 P-21ESSect-9.7 P-22ESSect-9.7 P-23ESSect-9.7 P-24ESSect-9.7 P-25ESSect-9.7 P-26ESSect-9.7 P-27ESSect-9.7 P-28ESSect-9.7 P-29ESSect-9.7 P-30ESSect-9.7 P-31ESSect-9.7 P-32ESSect-9.7 P-33ESSect-9.7 P-34ESSect-9.7 P-35ESSect-9.7 P-36ESSect-9.7 P-37ESSect-9.7 P-38ESSect-9.7 P-39ESSect-9.7 P-40ESSect-9.7 P-41ESSect-9.7 P-42ESSect-9.7 P-43ESSect-9.7 P-44ESSect-9.7 P-45ESSect-9.7 P-46ESSect-9.7 P-47ESSect-9.7 P-48ESSect-9.7 P-49ESSect-9.7 P-50ESSect-9.7 P-51ESSect-9.7 P-52ESSect-9.7 P-53ESSect-9.7 P-54ESSect-9.7 P-55ESSect-9.8 P-1TYSect-9.8 P-2TYSect-9.8 P-3TYSect-9.8 P-4TYSect-9.8 P-5TYSect-9.8 P-1ESSect-9.8 P-2ESSect-9.8 P-3ESSect-9.8 P-4ESSect-9.8 P-5ESSect-9.8 P-6ESSect-9.8 P-7ESSect-9.8 P-8ESSect-9.8 P-9ESSect-9.8 P-10ESSect-9.8 P-11ESSect-9.8 P-12ESSect-9.8 P-13ESSect-9.8 P-14ESSect-9.8 P-15ESSect-9.8 P-16ESSect-9.8 P-17ESSect-9.8 P-18ESSect-9.8 P-19ESSect-9.8 P-20ESSect-9.8 P-21ESSect-9.8 P-22ESSect-9.8 P-23ESSect-9.9 P-1TYSect-9.9 P-2TYSect-9.9 P-3TYSect-9.9 P-4TYSect-9.9 P-1ESSect-9.9 P-2ESSect-9.9 P-3ESSect-9.9 P-4ESSect-9.9 P-5ESSect-9.9 P-6ESSect-9.9 P-7ESSect-9.9 P-8ESSect-9.9 P-9ESSect-9.9 P-10ESSect-9.9 P-11ESSect-9.9 P-12ESSect-9.9 P-13ESSect-9.9 P-14ESSect-9.9 P-15ESSect-9.9 P-16ESSect-9.9 P-17ESSect-9.9 P-18ESSect-9.9 P-19ESSect-9.9 P-20ESSect-9.9 P-21ESSect-9.9 P-22ESSect-9.9 P-23ESSect-9.9 P-24ESSect-9.9 P-25ESSect-9.9 P-26ESSect-9.9 P-27ESSect-9.9 P-28ESSect-9.9 P-29ESSect-9.9 P-30ESSect-9.9 P-31ESSect-9.9 P-32ESSect-9.9 P-33ESSect-9.9 P-34ES
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