A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn b

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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.
Black. white.
yellow. red. blue
controls (not injured). 475.
341. 34.
156 87
cases(injured or killed). 198.
110. 9.
66. 43
Compute the test statistic. ____ ​(Round to three decimal places
as​ needed.)
Find the critical​ value(s).
__________
​(Round to three decimal places as needed. Use a comma to
separate answers as​ needed.)
Conclusion is ?