Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 10 - Statistics - 10.4 Mean, Median, and Mode - 10.4 Exercises - Page 737: 14



Work Step by Step

$Mean=\frac{sum of products}{total deliveries} \\=\frac{(4\times1)+(8\times3)+(16\times5)+(20\times1)}{1+3+5+1} \\=12.8$
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