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16 May, 04:29

A scientist has a hypothesis that as the number of police cars is increased on a roadway, the proportion of cars speeding decreases. He finds that at police car level X1 (one police car per 100 miles), the proportion of cars speeding is p hat equals 0.83. At police car level X2 (one police car per 50 miles), the proportion of cars speeding is p hat equals 0.61. At police car level X3 (one police car per 25 miles), the proportion of cars speeding is p hat equals 0.39. Should the hypothesis be rejected or should it fail to be rejected?

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  1. 16 May, 04:59
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    It should be rejected?
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