Answer
See below.
Work Step by Step
The sign test only used the sign of the differences, but the Wilcoxon signed-rank test also takes into consideration the rank of the differences.
Elementary Statistics (12th Edition)
by Triola, Mario F.
Published by
Pearson
ISBN 10:
0321836960
ISBN 13:
978-0-32183-696-0
Chapter 13 - Nonparametric Statistics - 13-3 Wilcoxon Signed-Ranks Test for Matched Pairs - Basic Skills and Concepts - Page 654: 3
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