Answer
55.6%
$μ-1.5σ=15.15~min$
$μ+1.5σ=39.45~min$
Work Step by Step
$1-\frac{1}{k^2}=1-\frac{1}{1.5^2}=0.555=55.6$%
$μ-1.5σ=27.3-1.5\times8.1=15.15$
$μ+1.5σ=27.3+1.5\times8.1=39.45$
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 3 - Section 3.2 - Assess Your Understanding - Applying the Concepts - Page 154: 36b
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