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Compute test statistic A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether

Compute test statistic

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A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a 0.05 significance level, test the claim that injuries are independent of helmet color. Color of Helmet D Black White Yellow Red Blue Controls (not injured) 490 356 35 169 96 Cases (injured or 202 111 9 70 45 killed) Click here to view the chi-square distribution table, Identify the null and alternative hypotheses. Choose the correct answer below. O A. He: Injuries and helmet color are dependent H1: Injuries and helmet color are independent &B. Ho: Injuries and helmet color are independent H, : Injuries and helmet color are dependent O C. Ho: Whether a crash occurs and helmet color are dependent H, : Whether a crash occurs and helmet color are independent O D. He: Whether a crash occurs and helmet color are independent H, : Whether a crash occurs and helmet color are dependent Compute the test statistic. (Round to three decimal places as needed.)

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