Answer
See below.
Work Step by Step
$SEM=\frac{s}{\sqrt n}$, so $s=SEM\sqrt n$
So $s_1=SEM_1\sqrt n_1=0.05\sqrt{25}=0.25$
$s_2=SEM_2\sqrt n_2=0.03\sqrt{25}=0.15$
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 21 - Comparing Two Means - Chapter 21 Exercises - Page 509: 21.28a
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