Answer
We are 95% confident that the mean duration time of eruptions of the geyser is between 233.4 and 256.65 seconds.
Work Step by Step
The correct statement is above. $\mu$ is between 233.4 and 256.65 seconds.
Essentials of Statistics (5th Edition)
by Triola, Mario F.
Published by
Pearson
ISBN 10:
0-32192-459-2
ISBN 13:
978-0-32192-459-9
Chapter 7 - Estimates and Sample Sizes - 7-3 Estimating a Population Mean - Page 350: 3
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