TABLE 12-8 A Study Published in the American Journal of Public Health

question 72

Multiple Choice

TABLE 12-8
A study published in the American Journal of Public Health was conducted to determine whether the use of seat belts in motor vehicles in San Diego County depends on ethnic status. A sample of 792 children treated for injuries sustained from motor vehicle accidents was obtained, and each child was classified according to (1) ethnic status (Hispanic or non-Hispanic) 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.

-Referring to Table 12-8, which test would be used to properly analyze the data in this experiment?

• A) X² test for independence
• B) X² test for differences among more than two proportions
• C) Wilcoxon rank sum test for independent populations
• D) Kruskal-Wallis rank test

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Definitions:

Sliding Clutch

Actuated by a shift yoke, used to engage a gear on a shaft. Also known as a dog clutch.

NPV

Net Present Value; a method used in capital budgeting to assess the profitability of a project or investment by calculating the difference between the present value of cash inflows and outflows.

CCA Rate

Stands for Capital Cost Allowance rate, which is a tax deduction in Canada that represents a business's investment in certain assets depreciating over time.

Tax Rate

The Tax Rate is the percentage at which an individual or corporation is taxed by the government on its income.