A team of experts claims that a modification in the type of light will reduce these accidents. The lights at the chosen intersections in New York were modified. The number of accidents before and after the modification has been recorded. ABCDEFGHIBefore6874877115After156042531State the null hypothesis if traffic department wants to test whether the modification reduces the number of traffic accidents in New YorkContinue from part a, state the corresponding alternative hypothesis of the testContinue from part a, calculate the test statistics of the testContinue from part c, what is the critical value of the test if the significant level is 1%?According to the test, is it reasonable to conclude that the modification reduced the number of traffic accidents?

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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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A team of experts claims that a modification in the type of light will reduce these accidents. The lights at the chosen intersections in New York were modified. The number of accidents before and after the modification has been recorded.

	A	B	C	D	E	F	G	H	I
Before	6	8	7	4	8	7	7	11	5
After	1	5	6	0	4	2	5	3	1

State the null hypothesis if traffic department wants to test whether the modification reduces the number of traffic accidents in New York
Continue from part a, state the corresponding alternative hypothesis of the test
Continue from part a, calculate the test statistics of the test
Continue from part c, what is the critical value of the test if the significant level is 1%?
According to the test, is it reasonable to conclude that the modification reduced the number of traffic accidents?

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