SCENARIO 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-yearolds 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 Scenario 12-13,the degrees of freedom of the test statistic are
Definitions:
Rhythm Method
A form of natural family planning based on tracking the menstrual cycle to predict fertile days to avoid or achieve pregnancy.
Birth Control
A method or device used to prevent pregnancy.
Total Fertility Rate
The average number of children that would be born to a woman over her lifetime in a given population.
Replacement-level Fertility
The birthrate needed for a population to reproduce itself exactly from one generation to the next, excluding any changes due to migration.
Q25: Referring to Scenario 12-11, what is the
Q27: Referring to SCENARIO 10-3, what is the
Q28: Referring to SCENARIO 13-4, what are the
Q39: Referring to Scenario 12-4, suppose the managers
Q101: Referring to SCENARIO 13-10, to test the
Q128: In performing a regression analysis involving two
Q168: Referring to SCENARIO 13-1, for these data,
Q181: Referring to SCENARIO 13-7, the estimate of
Q195: The residual represents the discrepancy between the
Q268: Referring to SCENARIO 13-13, the fitted model