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 critical value of the test will be
A) 6.635.
B) 13.277.
C) 14.860.
D) 21.666.

Question

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 critical value of the test will be
A) 6.635. 
B) 13.277. 
C) 14.860. 
D) 21.666.

Quizplus · Accepted Answer

The critical value of a test depends on the significance level and degrees of freedom. Without specific details, option B is a common critical value for chi-square tests with certain degrees of freedom and significance levels.

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