Answer
The interval $(-.65,8.65)$ does not lie within the range from 0 to 10.
Work Step by Step
$q=1-p=1-.4=.6$
$\mu=10(.4)=4$
$\sigma=\sqrt {npq}=\sqrt {10(.4)(.6)}=1.55$
$\mu\pm3\sigma=4\pm3(1.55)=(-.65,8.65)$
Statistics (12th Edition)
by McClave, James T.; Sincich, Terry T.
Published by
Pearson
ISBN 10:
0321755936
ISBN 13:
978-0-32175-593-3
Chapter 5 - Continuous Random Variables - Exercises 5.73 - 5.92 - Learning the Mechanics - Page 256: 5.76c
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