Answer
About 99.7%
Work Step by Step
$325-235=90=3σ$
$415-325=90=3σ$
According to the Empirical Rule, about 99.7% of the data will be between $μ−3σ$ and $μ+3σ$.
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: 31b
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