Answer
$\mu_1-\mu_2$ 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.
Elementary Statistics (12th Edition)
by Triola, Mario F.
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
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