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 - Guided Practice for Examples 1 and 2 - Page 758: 3

Answer

$47.5\%$

Work Step by Step

The normal distribution is symmetric about the mean; thus using the 68-95-99.7 rule we get: $P(\overline{x}\leq x\leq\overline{x}+2\sigma)=34\%+13.5\%=47.5\%$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.