A police authority installed speed cameras at accident black spots. In the following year they noted that
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A police authority installed speed cameras at accident black spots. In the following year they noted that the number of accidents at these sites had fallen from the year before the cameras were installed. Can one thus conclude that speed cameras are successful in reducing accidents?
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Related Book For
Medical Statistics
ISBN: 9780470025192
4th Edition
Authors: Michael J. Campbell, David Machin, Stephen J. Walters
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