TABLE 12-13 Recent Studies Have Found That American Children Are More Obese

question 55

Multiple Choice

TABLE 12-13
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 regards 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 12-13, how many children in the survey spend more than 6 hours watching TV and are more than 10 lbs. overweight?

• A) 1
• B) 9
• C) 20
• D) 40

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Definitions:

Popcorn

A type of corn kernel which expands and puffs up when heated, often consumed as a snack.

Perfect Complements

Goods that are always used together in fixed proportions, such that an increase in the consumption of one necessitates an equal percentage increase in the other.

Indifference Curves

Graphical representations in economics illustrating different combinations of goods that provide an individual with equal levels of utility.

Optimal Consumption

A state where consumers allocate their income in a way that maximizes their utility, given their preferences and the prices of goods and services.