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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Two methods, A and B, for controlling traffic were employed at each of n = 12 intersections for a period of 1 week. The numbers of accidents occurring during this time period are recorded in the following table. The order of use (which method was employed for the first week) was randomly chosen for each intersection.

a Analyze these data using the sign test.
b Analyze these data using the Wilcoxon signed-rank test for a matched-pairs experiment.
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