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T98 FINAL EXAM Time Remaining:04:28:48 SubmitTest pts possible 0 This Question: 1 pt ( 8 of 50 (6 complete) V E] Tes . 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 signicance level, test the claim that injuries are independent of helmet color. Color of Helmet a Black White Yellow Red Blue Controls (not injured) 500 358 33 164 67 Cases (injured or 222 118 Q 69 32 killed) Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. Choose the correct answer below. 0 A. H0: Whether a crash occurs and helmet color are independent H1: Whether a crash occurs and helmet color are dependent O B. H0: Injuries and helmet color are independent H1: Injuries and helmet color are dependent O C. H0: Injuries and helmet color are dependent H1: Injuries and helmet color are independent Click to select your answer(s). , A A .. _ 7-\" m. |