In a Study of Car Accidents and Drivers Who Use

Essay

In a study of car accidents and drivers who use cell phones,the following sample data are collected: $$\begin{array} { | l | l | l | } \hline & \text { Had accident in last year } & \text { Had no accident in last year } \\\hline \text { Cellular Phone User } & 23 & 282 \\\hline \text { Not cellular Phone User } & 46 & 407 \\\hline\end{array}$$
-At a significance level of 0.05,determine the appropriate degrees of freedom and the rejection point condition for the test.