Answer
Matched pairs.
Work Step by Step
Each subject undergoes each type of treatment, thus every data value in a sample will correspond to a data from the other sample (these will form a pair). Thus it is matched pairs.
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 24 - Inference about Variables: Part IV Review - Supplementary Exercises - Page 571: 24.47a
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