Answer
88.8
Work Step by Step
Weighted mean = (96 85 91) x 0.2 + 86 x 0.4
Elementary Statistics: Picturing the World (6th Edition)
by Larson, Ron; Farber, Betsy
Published by
Pearson
ISBN 10:
0321911210
ISBN 13:
978-0-32191-121-6
Chapter 2 - Descriptive Statistics - Review Exercises - Page 117: 16
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