Instruction 15-9
a Study Published in the Australian Journal of Public

Multiple Choice

Instruction 15-9
A study published in the Australian Journal of Public Health was conducted to determine whether the use of seat belts in motor vehicles depends on ethnic background. A sample of 792 children treated for injuries sustained from motor vehicle accidents was obtained, and each child was classified according to 1. ethnic background (English Speaking Background (ESor Non-English Speaking Background (NESB) ) 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.
$$\begin{array} { | l | c | c | } \hline & \text { NESB } & \text { ESB } \\\hline \text { Seat belts worn } & 31 & 148 \\\hline \text { Seat belts not worn } & 283 & 330 \\\hline\end{array}$$
-Referring to Instruction 15-9,at 5% level of significance,there is sufficient evidence to conclude that

A) use of seat belts in motor vehicles depends on ethnic background.
B) use of seat belts in motor vehicles is related to ethnic background.
C) use of seat belts in motor vehicles is associated with ethnic background.
D) All of the above.