Instruction 15-1
a Study Published in the Australian Journal of Public

question 115

Multiple Choice

Instruction 15-1
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 (ESB) or 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.
$$\begin{array} { | l | c | c | } \hline & \text { NESB } & \text { ESB } \\\hline \text { Seat belts wom } & 31 & 148 \\\hline \text { Seat belts not worn } & 283 & 330 \\\hline\end{array}$$
-Referring to Instruction 15-1,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:

Foreign Corporation

A corporation that is registered to do business in a state or jurisdiction other than where it was originally incorporated.

Interstate

Pertaining to the movement, transportation, or trade between two or more states within a country.

Intrastate

Activities or commerce that occur exclusively within the boundaries of a single state and are not subject to federal jurisdiction.

Alien

A foreign national who is not a citizen of the country in which they are living.