SCENARIO 12-8
a Study Was Conducted to Determine Whether the Use

Short Answer

SCENARIO 12-8
A study was conducted to determine whether the use of seat belts in motor vehicles depends on the
educational status of the parents. A sample of 792 children treated for injuries sustained from motor
vehicle accidents was obtained, and each child was classified according to (1) parents' educational
status (College Degree or Non-College Degree) and (2) seat belt usage (worn or not worn) during the
accident. The number of children in each category is given in the table below. $$\begin{array} { r | c c } & \begin{array} { c } \text { Non-College } \\\text { Degree }\end{array} & \begin{array} { c } \text { College } \\\text { Degree }\end{array} \\\hline \hline \text { Seat belts not worn } & 31 & 148 \\\text { Seat belts worn } & 283 & 330\end{array}$$
-Referring to Scenario 12-8, which test would be used to properly analyze the data in this experiment? a) $\chi ^ { 2 }$ test for independence
b) $\chi ^ { 2 }$ test for differences among more than two proportions
c) Wilcoxon rank sum test for independent populations
d) Kruskal-Wallis rank test