Answer
12.8
Work Step by Step
$Mean=\frac{sum of products}{total deliveries}
\\=\frac{(4\times1)+(8\times3)+(16\times5)+(20\times1)}{1+3+5+1}
\\=12.8$
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 10 - Statistics - 10.4 Mean, Median, and Mode - 10.4 Exercises - Page 739: 14
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