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of traffic accid nts at intersections with raised medians with rates at intersections with two...

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of traffic accid nts at intersections with raised medians with rates at intersections with two way left turn lanes They found that out of 4656 accidents at intersections with raised medians 2112 were rear end accidents and out of 4574 accidents at two way left turn lanes 2024 were rear end accidents Part 1 of 2 a Assuming these to be random samples of accidents from the two types of intersection construct a 99 9 confidence for the difference between the proportions of accidents that are of the rear end type at the two types of intersection Use the TI 84 calculator and round the answers to three decimal places Let p represent the population for accidents at intersections with raised medians A 99 9 confidence interval for the difference between the proportions of accidents that are of the rear end type at the two types of intersection is I P P Part 1 2 Part 2 of 2 b Does the confidence interval contradict the claim that the proportion of rear end accidents is the same at both types of intersection Because the confidence interval Choose one 0 it Choose one that the pr the claim

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