Answer
After removing the outlier, we notice that the mean has decreased a little while confidence interval has also become more narrow.
Work Step by Step
Given above.
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 479: 20.36b
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