Answer
E(x) = -4
Work Step by Step
E(x) = -20(0.2)+(-10)(0.4)+0(0.2)+10(0.1)+20(0)+30(0.1) = -4
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 8 - Section 8.3 - Measures of Central Tendency - Exercises - Page 576: 16
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