Elementary Statistics (12th Edition)

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

Chapter 9 - Inferences from Two Samples - 9-3 Two Means: Independent Samples - Basic Skills and Concepts - Page 463: 2


$\mu_1-\mu_2$ is between -17.32 and -11.61 cm.

Work Step by Step

We can interchange the populations by multiplying the whole confidence interval by (-1), hence: $\mu_1-\mu_2$ is between -17.32 and -11.61 cm.
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