Answer
IQR = 30.5
Work Step by Step
IQR = 72.5 - 42 = 30.5
If we consider the total time the student spends on each section of the text, we see that the middle 50% has a range of 30.5 minutes.
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 3 - Section 3.4 - Assess Your Understanding - Applying the Concepts - Page 172: 18b
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