Answer
$(57.74,90.67)$
Work Step by Step
A $95\%$ interval can be found below $95\% PI$, thus it is: $(57.74,90.67)$
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 26 - Inference for Regression - Chapter 26 Exercises - Page 640: 26.31b
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