Answer
39.9375 dollar.
Work Step by Step
Weighted mean(dollar) = [ (1200x30)+(1900x45)+(1400x40)+(2200x35)+1300+50) ]/ 8000 = 39.9375
Introductory Statistics 9th Edition
by Mann, Prem S.
Published by
Wiley
ISBN 10:
1-11905-571-7
ISBN 13:
978-1-11905-571-6
Chapter 3 - Section 3.1 - Measures of Center for Ungrouped Data - Exercises - Page 89: 3.21
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