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6. (4 points} An insurance company is interested in determining whether there is a relationship between automobile accident frequency and cigarette smoking. It randomly sampled 597 poli- cyholders and came up with the following data: Page 1 of 2 Spring 2022 MAT 1372 Final Exam Number of accidents in the last two years Smokers Nonsmokers ' 0 35 170 1 79 190 2 or more 57 66 You wish to test the hypothesis that the accident frequency of a randomly chosen policyholder is independent of their smoking habits. (a) (3 points) What is the test statistic for this hypothesis test? (b) {1 point} Is the claim disproved at the 5 percent level of signicance