Answer
In this district, the length of the school day is 6.906 hours, on average.
Work Step by Step
$ŷ =-0.0102x+7.11$
$ŷ =-0.0102\times20+7.11$
$ŷ =6.906$
Statistics: Informed Decisions Using Data (4th Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0321757270
ISBN 13:
978-0-32175-727-2
Chapter 4 - Review - Review Exercises - Page 249: 19c
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