Recent studies have found that American children are more obese than in the past

Question

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 11.13, the critical value of the test will be _________ 6.635 21.666 13.277 14.860

Explanation / Answer

Here in this case,

Degrees of freedom = (Row - 1)*(Column - 1) = 2*2 = 4

Level of significance = 0.01

Hence,

Critical value = 13.277

Option C

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