The Basic Practice of Statistics 7th Edition

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

Chapter 7 - Exploring Data: Part I Review - Test Yourself - Page 194: 7.38f

Answer

Replacing x in the regression line with 2020 and evaluating: $ŷ = 1003.28 - 0.49 (2020) = 13.48$ This predicts that by 2020, 13.48% of adults will be smokers.

Work Step by Step

Replacing x in the regression line with 2020 and evaluating: $ŷ = 1003.28 - 0.49 (2020) = 13.48$ This predicts that by 2020, 13.48% of adults will be smokers.
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