Answer
$34\%$
Work Step by Step
The normal distribution is symmetric about the mean; thus using the 68-95-99.7 rule we get: $P(\overline{x}-\sigma\leq x\leq\overline{x})=34\%$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 11 Data Analysis and Statistics - 11.3 Use Normal Distributions - Guided Practice for Examples 1 and 2 - Page 758: 4
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