Injuries and Motorcycle Helmet Color
January 26th, 2023
A case-control 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 table below. Test the claim that injuries are independent of helmet color. Should motorcycle drivers choose helmets with a particular color? If so, which color appears best?
Color of Helmet
Black White Yellow/Orange Red Blue
Controls (Not Injured) 491 377 31 170 55
Cases (injured or Killed) 213 112 8 70 26.