Answer
From the stemplot we observe that the data is heavily skewed. Hence it is not suitable to use t procedure in this case.
Work Step by Step
Create a stemplot in minitab from graphs menu.
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 20 - Inference about a Population Mean - Chapter 20 Exercises - Page 480: 20.39b
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