A Random Sample of 160 Car Crashes Are Selected and Categorized

question 3

Multiple Choice

A random sample of 160 car crashes are selected and categorized by age. The results are listed below. The age distribution of drivers for the given categories is 18% for the under 26 group, 39% for the 26-45 group, 31% for
The 45-65 group, and 12% for the group over 65. Calculate the chi-square test statistic χ $$\chi ^ { 2 }$$ to test the claim that
All ages have crash rates proportional to their driving rates. $$\begin{array} { l | c c c c } \text { Age } & \text { Under 26 } & 26 - 45 & 46 - 65 & \text { Over 65 } \\\hline \text { Drivers } & 66 & 39 & 25 & 30\end{array}$$

• A)75.101
• B)85.123
• C)101.324
• D)95.431