Algebra 2 (1st Edition)

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: 3



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: $P( x\leq\overline{x}-\sigma)=0.15\%+2.35\%+13.5\%=16\%$
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