A transportation strategist wanted to compare the traffic congestion levels across three continents: Asia, Europe, and North

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A transportation strategist wanted to compare the traffic congestion levels across three continents: Asia, Europe, and North America. The file CongestionLevel contains congestion level, defined as the increase (%) in overall travel time when compared to a free flow situation (an uncongested situation) for 30 cities in each continent. (Data extracted from "TomTom Traffic Index," bit.ly/1KvUAWM.)
a. At the 0.05 level of significance, is there evidence of a difference in the median congestion levels across continents?
b. Compare the results of (a) with those of Problem 11.14 (a) on page 363.
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Statistics For Managers Using Microsoft Excel

ISBN: 9780134173054

8th Edition

Authors: David M. Levine, David F. Stephan, Kathryn A. Szabat

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