On January 1 2004 it became mandatory for all police departm
On January 1, 2004, it became mandatory for all police departments in Illinois to record data pertaining to race from every traffic stop. THe villlage of Mundelein, Illinois, has been collecting data since 2000. Rather than using census data to determine the racial distribution of the village, they thought it better to use data based on who is using the roads in Mundelein. So they collected data on at-fault drivers involved in car accidents in the village (the implicit assumption here is that race is independent of fault in a crash) and obtained the following distribution of race for users of roads in Mundelein. Race/Proportion = White 0.719/AfricanAmerican 0.028/Hispanic 0.207/Asian 0.046. The following data represent the races of all 9868 drivers who were stopped for a moving violation in the village of Mundelein in a recent year. Race/Proportion = White 7079/AfricanAmerican 273/Hispanic 2025/Asian 491. (a) does the distribution of race in traffic stops reflect the distribution of drivers in Mundelein? In other words, is there any evidence of racial profiling in Mundelein? Use a P-value test of hypothesis to test at the a = 0.05 level of significance. (b) what is the null hypothesis (c) what is the alternative hypothesis (d) what is the value of the test statistic (e) what is the p-value of your test statistic (f) conclusion (g) compare observed and expected counts for each category. What does this information tell you? Please make answers easy to identify.
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