Example 180

Example 180: Is the color of the motorcycle helmet used by riders somehow related to the risk of crash related injuries?  Use the data below to test the claim at the 5% level of significance that the colors of motorcycle helmets are independent of crash injuries.  
                                  Black    White    Yellow/Orange    Totals
Not Injured                 491    377                   31               899
Injured or Killed        213    112                     8                333
Totals                          704    489                  39               1232