2. What is the required condition for the statistical procedure in(1)? (5 分)

3. Describe how to check whether the required condition issatisfied. (5 分)

五、Studies suggest there are several detrimental effects of televisionviewing on children. One of the problems may be that watchingtelevision reduces the amount of physical exercise and causesobesity. A sample of five 10-year-old children was taken. Thenumber of overweight kilograms (y) to each child was recorded.In addition, the number of hours of television viewing per week(x) was also recorded. These data are listed in the followingtable: 1. Fill out the blank cells in the above table. Calculate the samplelinear regression line () and describe what the slope coefficienttells you about relationship between the two variables. (15 分)(Please first calculate)

2. Is there evidence of a linear relationship between the numberof hours of television viewing and how overweight the child is?Please calculate the t-statistics, and use a two-tail test of at a5% significance level to support your judgment. Formulas tocalculate the t-statistics are provided as follows. (15 分)

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