Answer
The assumptions are as follows:
a. The sample is a random sample.
b. The population must be normally distributed.
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 7 - Confidence Intervals and Sample - 7-4 Confidence Intervals for Variances and Standard Deviations - Exercises 7-4 - Page 404: 2
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