Answer
See below.
Work Step by Step
In a game of chance to obtain the expected value we need to multiply the gain or loss for each possibility by its probability and then sum these together.
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 11 - Counting Methods and Probability Theory - 11.8 Expected Value - Concept and Vocabulary Check - Page 754: 2
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