The Basic Practice of Statistics 7th Edition

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

Chapter 2 - Describing Distributions with Numbers - Apply Your Knowledge - Page 60: 2.10a

Answer

10.5 picocuries per liter is the mean.

Work Step by Step

$ 6.2 + 12.8 + 7.6 + 15.4 = 42 $ $ 42/4 = 10.5 $
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