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

question 113

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,the critical value of the test statistic is

• A) 5.9914.
• B) 3.8415.
• C) 9.4877.
• D) 13.2767.

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Definitions:

Apical Bronchopulmonary Segment

A section of lung tissue served by its own bronchus and artery, part of the lung's segmented architecture for gas exchange.

Damaged Area

A region or part of the body or an object that has been harmed or impaired.

Respiratory Bronchioles

The smallest airways within the lungs that connect the terminal bronchioles to alveolar ducts, participating in gas exchange.

Terminal Bronchioles

The smallest airways in the lungs before the alveolar regions, involved in conducting air to the gas exchange surfaces.