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

question 113

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, the degrees of freedom of the test statistic are

• A) 1.
• B) 2.
• C) 4.
• D) 9.

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