Lin Chi-Ling works for an insurance company and is studying the relationship between types of crashes and the vehicles involved in passenger vehicle occupant deaths. As part of your study, you randomly select 4270 vehicle crashes and organize the resulting data as shown in the contingency table. At α = 0.05 can you conclude that the type of crash depends on the type of vehicle?     Vehicle               Type of crash Car Pickup Sport utility Single-vehicle 1237 547 479 Multiple-vehicle 1453 307 247   What is the Chi-square test statistics and the decision for this question.

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.