5) Traffic engineers compared rates of traffic collisions at intersections with raised medians and rates at intersections with two-way left-turn lanes. They found that out of 4,512 collisions at intersections with raised medians, 2,202 were rear-end collisions, and out of 4,277 collisions at two-way left-turn lanes, 1,903 were rear-end collisions. Assuming these to be random samples of collisions from the two types of intersections, a 95% confidence interval for the difference between the proportions of collisions that are of the rear-end type at the two types of intersection. Does the confidence interval contradict the claim that the proportion of rear-end collisions is the same at both types of intersection? A) No B) Yes

5) Traffic engineers compared rates of traffic collisions at intersections with raised medians and rates at intersections with two-way left-turn lanes. They found that out of 4,512 collisions at intersections with raised medians, 2,202 were rear-end collisions, and out of 4,277 collisions at two-way left-turn lanes, 1,903 were rear-end collisions. Assuming these to be random samples of collisions from the two types of intersections, a 95% confidence interval for the difference between the proportions of collisions that are of the rear-end type at the two types of intersection. Does the confidence interval contradict the claim that the proportion of rear-end collisions is the same at both types of intersection? A) No B) Yes

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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