Answer
No, there are only 2 treatments
Work Step by Step
2 treatments, not 4 treatments were present in the experiment.
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 9 - Producing Data: Experiments - Chapter 9 Exercises - Page 248: 9.32d
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