Answer
It is an outlier.
Work Step by Step
With $n=25,s=3$, we have $s\sqrt {n-1}=3\sqrt 24=64.7$
A data value of 67 would be outside the range and regarded as an outlier.
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 - 3-2 Measures of Variation - Extending the Concepts - Page 147: 49
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