Mathematics, 16.08.2020 01:01 nuhaminbruk
Two different red-light-running signal systems were installed at various intersection locations with the goal of reducing angle-type crashes. Red-Light-Running System A resulted in 60% angle crashes over a sample of 720 total crashes. Red-Light-Running System B resulted in 52% angle crashes over a sample of 680 total crashes. Was there a difference between the proportions of angle crashes between
Answers: 3
![t = \frac{ ( \r p_1 - \r p_2 ) - 0 }{ \sqrt{ (p_p (1- p_p) * [ \frac{1}{n_1 } + \frac{1}{n_2 } ])} }](/tpl/images/0722/9115/9b4a4.png)
![t = \frac{ (0.60 - 0.52 ) - 0 }{ \sqrt{ (0.56 (1- 0.56) * [ \frac{1}{720} + \frac{1}{680 } ])} }](/tpl/images/0722/9115/8e2ee.png)
so the null hypothesis is rejected 
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Two different red-light-running signal systems were installed at various intersection locations with...
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