TABLE 11-13 Recent Studies Have Found That American Children Are More Obese

question 50

Multiple Choice

TABLE 11-13
Recent studies have found that American children are more obese than in the past. The amount of time children spent watching television has received much of the blame. A survey of 100 ten-year-olds revealed the following with regard to weights and average number of hours a day spent watching television. We are interested in testing whether the mean number of hours spent watching TV and weights are independent at 1% level of significance.

-Referring to Table 11-13, the degrees of freedom of the test statistic are

• A) 1.
• B) 2.
• C) 4.
• D) 9.

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Definitions:

Marginal Social Cost

Marginal social cost is the total cost to society of producing an additional unit of a good, including both private costs and any external costs.

External Costs

Costs incurred as a result of an economic activity that are not borne by the entities undertaking the activity but rather by other parties or society at large.

Marginal Cost

The rise in expense associated with the production of an extra unit of a product or service.

Benefits To Consumers

Refers to the advantages or improvements in well-being and satisfaction that consumers experience from purchasing and using goods and services.