Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 12 - Analysis of Variance - 12-3 Two-Way ANOVA - Basic Skills and Concepts - Page 623: 2

Answer

See below.

Work Step by Step

There is a possibility of an interaction effect, hence we use the two-way analysis of variance first. If there is no interraction effect, we can use the two-way analysis.
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