Answer
88.9% of gasoline stations had prices within 3 standard deviations of the mean.
Work Step by Step
Using Chebyshev's inequality for k =1:
$(1 - 1/3^{2}) = 88.9%$
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 3.2 - Assess Your Understanding - Applying the Concepts - Page 154: 35a
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