Answer
Since r = 0.5, it implies that 50% of the heights are explained by least squares line, hence the prediction for a single couple will not be very accurate.
Work Step by Step
Given above
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 5 - Regression - Chapter 5 Exercises - Page 155: 5.34c
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