Answer
$72$%
Work Step by Step
It is the sum of the relative frequencies of the first three classes: "50,000–99,999", "100,000–149,999" and "150,000–199,999". That is, the cumulative relative frequency of "150,000–199,999
" $=0.72=72$%
Statistics: Informed Decisions Using Data (4th Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0321757270
ISBN 13:
978-0-32175-727-2
Chapter 2 - Review - Review Exercises - Page 120: 6c
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