Statistics: Informed Decisions Using Data (4th Edition)

by Sullivan III, Michael

Published by Pearson

ISBN 10: 0321757270

ISBN 13: 978-0-32175-727-2

Chapter 13 - Section 13.2 - Assess Your Understanding - Applying the Concepts - Page 645: 17e

Answer

$_{5}C_2=10$

Work Step by Step

For each pairwise we must select 2 from the 5 treatment levels. $_nC_r=~_{5}C_2=\frac{5!}{2!\times(5-2)!}=\frac{5!}{2!\times3!}=\frac{120}{2\times6}=10$

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