Answer
$t^*=1.44$.
Work Step by Step
The critical value is given in the row $df=n-1=6-1=5$ and in the column with $c=0.8$ of the table. Thus $t^*=1.44$.
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 - Check Your Skills - Page 477: 20.21
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