Elementary Statistics: Picturing the World (6th Edition)

Published by Pearson
ISBN 10: 0321911210
ISBN 13: 978-0-32191-121-6

Chapters 1 & 2 - Cumulative Review - Page 127: 14

Answer

Weighted mean is 88.9.

Work Step by Step

Compute weighted mean by multiplying first 4 observations with 0.15 and last with 0.40 and sum the value
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