Answer
σ = 1.2
Work Step by Step
Here, we have $μ_{x} = 1.627$, so $μ_{x}^{2} = 2.647$
$∑x^{2}.P(x) = 4.04$
Plugging in the values into the formula:
$σ = \sqrt (∑x^{2}.P(x) - μ_{x}^{2})$
$= \sqrt (4.04 - 2.64) $
= 1.2
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 6.1 - Assess Your Understanding - Applying the Concepts - Page 331: 19d
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