Answer
$82.6\%$
Work Step by Step
Use Chebyshev’s theorem. $k=(243-231)/5=2.4$
The minimum percentage is $1-1/2.4^2=0.826$ or $82.6\%$
Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition
by Bluman, Allan
Published by
McGraw-Hill Education
ISBN 10:
0078136334
ISBN 13:
978-0-07813-633-7
Chapter 3 - Data Description - Review Exercises - Section 3-2 - Page 179: 18
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