Answer
$84\%$
Work Step by Step
The normal distribution is symmetric about the mean. Thus using the 68-95-99.7 rule and the graph we get:
$P( x\geq\overline{x}-\sigma)=0.15\%+2.35\%+13.5\%+34\%+34\%=84\%$
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 - 11.3 Exercises - Skill Practice - Page 760: 6
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