#### Answer

190

#### Work Step by Step

$s^{2}_{p} = \frac{(25-1)200 + (25-1)180}{25+25-2}$
= $\frac{4800 + 4320}{48} = 190$

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Published by
Pearson

ISBN 10:
0321755936

ISBN 13:
978-0-32175-593-3

190

$s^{2}_{p} = \frac{(25-1)200 + (25-1)180}{25+25-2}$
= $\frac{4800 + 4320}{48} = 190$

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