Answer
true
Work Step by Step
In a probability model, the sum of all probabilities is the probability of the sample space, which is equal to $ 1.$ Thus the statement is true,
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 12 - Counting and Probability - Section 12.3 Probability - 12.3 Assess Your Understanding - Page 884: 4
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