The Basic Practice of Statistics 7th Edition

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: 24.48

Answer

See below.

Work Step by Step

The data has only $4$ subjects. Each of the $4$ subject made the experiment $6$ times, thus these repetitions are not independent. Thus the total $4\cdot6=24$ repetitions are not independent either.
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