15.29 Traffic Control Two methods for controlling traffic, A and B, were used at each of n...
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15.29 Traffic Control Two methods for controlling traffic, A and B, were used at each of n = 12 intersections for a period of 1 week, and the numbers of accidents that occurred during this time period were recorded. The order of use (which method would be employed for the first week) was selected in a random manner. You want to know whether the data provide sufficient evidence to indicate a difference in the distributions of accident rates for traffic control methods A and B.
a. Analyze using a sign test.
b. Analyze using the Wilcoxon signed-rank test for a paired experiment.
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Related Book For
Introduction To Probability And Statistics
ISBN: 9780176509804
3rd Edition
Authors: William Mendenhall
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