b)- critical value?

c)- what is the conclusion based on the hypothesis test?

A casecontrol (or retrospective) study was conducted to investigate a relationship between the oolors 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 E Black White Yellow Red Blue Controls (not injured) 483 364 30 157 67 Cases (injured or 208 117 7 67 32 killed) Click here to view the chi-square distribution table. D. H0: Whether a crash occurs and helmet color are dependent H1: Whether a crash occurs and helmet color are independent Compute the test statistic. (Round to three decimal places as needed.)