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...

Identify the test statistic.

Identify the critical value.

What is the conclusion of this hypothesis test?

Extracted text: 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 Black White Yellow Red Blue Controls (not injured) Cases (injured or killed) 461 354 29 156 93 201 109 7 64 45 Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. Choose the correct answer below. A. Ho: Whether a crash occurs and helmet color are independent H,: Whether a crash occurs and helmet color are dependent B. Ho: Whether a crash occurs and helmet color are dependent H,: Whether a crash occurs and helmet color are independent O C. Ho: Injuries and helmet color are dependent H4: Injuries and helmet color are independent D. Ho: Injuries and helmet color are independent H,: Injuries and helmet color are dependent