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You work for an insurance company and are studying the relationship between types of crashes and the vehicles involved. As part of your study, you
You work for an insurance company and are studying the relationship between types of crashes and the vehicles involved. As part of your study, you randomly select 3425 vehicle crashes and organize the resulting data as shown in the contigency table. At alpha equals 0.05, can you conclude that the type of crash depends on the type of vehicle? Complete parts (a) through (d). Type of crash Car Pickup Sport utility Single-vehicle 803 335 270 Multiple-vehicle 1133 470 414 Determine the degrees of freedom, find the critical value, and identify the rejection region. Part 3 Calculate the degrees of freedom. d.f.equals 2 Part 4 Find the critical value. chi Subscript 0 Superscript 2equals enter your response here (Round to three decimal places as needed.) Part 5 Which region below is the correct rejection region? A.chi squared less than or equals chi Subscript 0 Superscript 2 chi squaredless than or equalschi Subscript 0 Superscript 2 B.chi squared greater than chi Subscript 0 Superscript 2 chi squaredgreater thanchi Subscript 0 Superscript 2 C.chi squared less than chi Subscript 0 Superscript 2 chi squaredless thanchi Subscript 0 Superscript 2 D.chi squared greater than or equals chi Subscript 0 Superscript 2 chi squaredgreater than or equalschi Subscript 0 Superscript 2
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