Answer
Mean:
$μ_X=2$
Standard deviation:
$σ_X=1.26$
Work Step by Step
Mean:
$μ_X=np=10×0.2=2$
Standard deviation:
$σ_X=\sqrt {np(1−p)}=\sqrt {10\times0.2(1-0.2)}=\sqrt {10\times0.2\times0.8}=1.26$
Statistics: Informed Decisions Using Data (4th Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0321757270
ISBN 13:
978-0-32175-727-2
Chapter 6 - Section 6.2 - Assess Your Understanding - Vocabulary and Skill Building - Page 344: 32c
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