TABLE 11-8 A Study Published in the American Journal of Public Health

question 23

Multiple Choice

TABLE 11-8
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 11-8, at 5% level of significance, there is sufficient evidence to conclude that

• A) use of seat belts in motor vehicles is related to ethnic status in San Diego County.
• B) use of seat belts in motor vehicles depends on ethnic status in San Diego County.
• C) use of seat belts in motor vehicles is associated with ethnic status in San Diego County.
• D) all of the above

---

Definitions:

Children's Understanding

The developmental processes by which children come to comprehend concepts, ideas, and the world around them.

Critical Period

A specific time during development when the organism is particularly sensitive to certain stimuli, making it easier for certain skills or behaviors to be acquired.

Sensitive Period

A stage in an organism's development during which it is more responsive to certain stimuli and capable of learning or adapting in particular ways.

Environmental Input

Any information or stimuli that an organism receives from its surroundings, which can affect its behavior and development.