Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 7 - Estimates and Sample Sizes - 7-3 Estimating a Population Mean - Beyond the Basics: 41

Answer

μ is between -26.06 and 32.04. This interval is uch wider than the one in exercise 21.

Work Step by Step

In exercise 21 the first value is 3. Hence then the interval becomes: $\mu$ is between$ 3-9.68\cdot 3=-26.06$ and $ 3+9.68\cdot 3=32.04 .$ This interval is uch wider than the one in exercise 21.
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