Use a 0.05 significance level to test the claim that pedestrian fatalities are independent of the intoxication of the driver and the intoxication of the pedestrian. Use the traditional method. Include all the expected values in the chart. the null and alternative hypothesis,the critical value,the test statistic,Draw the graph and label the test statistic, critical value and rejection regions.Reject or fail to reject?State the conclusion as outlined in the template or book Pedestrian IntoxicatedExpected ValuePedestrian not intoxicatedExpected ValueTotalsDriver Intoxicated59 79 Driver not Intoxicated266 581 Totals

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Description: Use a 0.05 significance level to test the claim that pedestrian fatalities are independent of the intoxication of the driver and the intoxication of the pedestrian. Use the traditional method. Include all the expected values in the chart.

In this case, it is needed to check whether pedestrian fatalities are independent of the intoxication of the driver and the intoxication of the pedestrian.The null and alternative hypotheses for the test are: H0: Pedestrian fatalities are independent of the intoxication of the driver and the intoxication of the pedestrian. Ha: Pedestrian fatalities are not independent of the intoxication of the driver and the intoxication of the pedestrian. A chi-squared test of independence is suitable to be used in this situation. The degrees of freedom is, df = (2 – 1)(2 – 1) = 1. The level of significance is 0.05. Using the Excel formula, =CHISQ.INV.RT(0.05,1), the critical value is 3.841. Decision rule: If the test statistic value is greater than or equal to the level of significance, then reject the null hypothesis. Otherwise, fail to reject the null hypothesis. Since the test statistic of 6.916 is greater than the critical value of 3.841, reject H0. Thus, there is enough evidence against the claim that pedestrian fatalities are independent of the intoxication of the driver and the intoxication of the pedestrian. The graph is,

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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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Use a 0.05 significance level to test the claim that pedestrian fatalities are independent of the intoxication of the driver and the intoxication of the pedestrian. Use the traditional method. Include all the expected values in the chart.

the null and alternative hypothesis,
the critical value,
the test statistic,
Draw the graph and label the test statistic, critical value and rejection regions.

Reject or fail to reject?

State the conclusion as outlined in the template or book

	Pedestrian Intoxicated	Expected Value	Pedestrian not intoxicated	Expected Value	Totals
Driver Intoxicated	59		79
Driver not Intoxicated	266		581
Totals

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