Economists compared the toll rates in places using automated collection with those that collect tolls manually. They found that automated collection is associated with toll rate increases 20 to 40 percent higher than in places using manual collection. This difference may be due to the costs associated with the technology. However, another study showed that manually collected tolls increased the least during election years, while automatic tolls showed no such pattern.
Which of the following hypotheses
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Which of the following hypotheses
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