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

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TABLE 12-12
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 average number of hours spent watching TV and weights are independent at 1% level of significance.
TABLE 12-12 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 average number of hours spent watching TV and weights are independent at 1% level of significance.    -Referring to Table 12-12, the value of the test statistic is A)  8.532. B)  15.483. C)  18.889. D)  69.744.
-Referring to Table 12-12, the value of the test statistic is


Definitions:

Interaction Effect

Occurs when the effect of one independent variable on a dependent variable changes across the levels of another independent variable.

Crime Area

A geographical location with a measurable level of criminal activity or events.

Main Effects

The immediate impact that an independent variable has on a dependent variable within an experimental research setting.

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