Answer
Sample mean = 128. Within 5 minutes implies:
$123 \leq x̅ \leq 133$
From the distribution in part c we observe that there are 6 observations between 123 and 133. Hence p = 6/15=0.4
Work Step by Step
Given above.
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 8 - Section 8.1 - Assess Your Understanding - Applying the Concepts - Page 412: 32e
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