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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 0.01 significance level, test the claim that injuries are independent of helmet color, Color of Helmet Black White Yellow Red Blue Controls (not injured) 496 351 34 160 92 Cases (injured or 215 109 9 66 45 killed) - X Click here to view the chi-square distribution table. Chi-square distribution table Area to the Right of the Critical Value Identify the null and alternative hypotheses. Choose the correct answer below. Degrees of Freedom 0.995 0.99 0.975 0.95 0.90 0.10 O A. Ho: Injuries and helmet color are dependent 0.001 0.004 0.016 2.706 H,: Injuries and helmet color are independent 0.010 0.020 0.051 0.103 0.211 4.605 O B. Ho: Whether a crash occurs and helmet color are dependent 0.072 0.115 0.216 0.352 0.584 6.251 UAWN - 0.207 0.297 0.484 0.711 1.064 7.779 H, : Whether a crash occurs and helmet color are independent 0.412 0.554 0.831 1.145 1.610 9.236 O C. He: Injuries and helmet color are independent 0.676 0.872 1.237 1.635 2.204 10.645 H, : Injuries and helmet color are dependent 0.989 1.239 1.690 2.167 2.833 12.017 1.344 1.646 2.180 2.733 3.490 13.362 D. Ho: Whether a crash occurs and helmet color are independent 1.735 2.088 2.700 3.325 4.168 14.684 urce H, : Whether a crash occurs and helmet color are dependent 2.156 2.558 3.247 3.940 4 865 15.987 ary Print Done ns Help me solve this View an example Get more help Clear all Check