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 - 4-4 Counting Rules - Exercises 4-4 - Page 236: 22

Answer

286, 378

Work Step by Step

No. of free samples = 13 If customer makes exactly 3 requests = 13C3 = 286 If customers makes up to 3 requests = 13C0 + 13C1 + 13C2 + 13C3 = 378

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