Answer
a. $1/36$
b. $1/36$
Work Step by Step
Total outcomes $6\times6\times6=216$
a. Triples
6 outcomes (111,222,333,444,555,666), $p=6/216=1/36$
b. A sum of 5
6 outcomes (113,122,131,212,221,311), $p=6/216=1/36$
Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition
by Bluman, Allan
Published by
McGraw-Hill Education
ISBN 10:
0078136334
ISBN 13:
978-0-07813-633-7
Chapter 4 - Probability and Counting Rules - 4-2 The Addition Rules for Probability - Exercises 4-2 - Page 209: 26
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