The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 26 - Inference for Regression - Chapter 26 Exercises - Page 637: 26.25b

Answer

See below

Work Step by Step

The coefficient of determination $r^2=90\%$ implies that $90\%$ of the variation in the number of mirid bugs per $100$ plants is described by the straight-line relationship between the Bt cotton planting proportion of the number of mirid bugs per $100$ plants.
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