Answer
$\mu=12.5$
$\sigma^2=6.25$
$\sigma=2.5$
Work Step by Step
$q=1-p=1-.5=.5$
$\mu=np=25(.5)=12.5$
$\sigma^2=npq=25(.5)(.5)=6.25$
$\sigma=\sqrt {6.25}=2.5$
Statistics (12th Edition)
by McClave, James T.; Sincich, Terry T.
Published by
Pearson
ISBN 10:
0321755936
ISBN 13:
978-0-32175-593-3
Chapter 4 - Discrete Random Variables - Exercises 4.50 - 4.76 - Learning the Mechanics - Page 205: 4.57a
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