In a study of the relationship between TV viewing and eating habits, a sample of 548 ethnicallly diverse students from Massachusetts was followed over a 19-month period. For each additional hour of television viewed per day, the number fruit and vegetable servings per day was found to decrease on average by 0.14 servings. a. For this study, what the response variable?

1. location of students
2. number of fruit and vegetable servings per day
3. number of non fruit or vegetable servings per day
4. number of hours television viewed per day
5. year

What is the explanatory (predictor) variable?

1. location of students
2. number of fruit and vegetable servings per day
3. number of non fruit or vegetable servings per day
4. number of hours television viewed per day
5. year

b. Would the least squares regression line for predicting number of servings or fruits and vegetables using number or hours spent watching have a positive or negative slope? Justify your choice.

1. The slope of the least squares line would be negative. As the number of hours of TV watched per day increases, the number of fruit and vegetable servings per day increases on average.
2. The slope Of the least squares line would be negative. As the number Of hours of TV watched per day increases, the number Of fruit and vegetable servings per day decreases on average.
3. The slope of the least squares line would be positive. AS the number of hours of TV watched per day increases, the number of fruit and vegetable servings per day increases on average.
4. The slope of the least squares line would be positive. As the number of hours of TV watched per day increases, the number of fruit and vegetable servings per day decreases on average.

c. The equation of the regression line for this study has an intercept of 2. Based on the estimated regression equation, if a randomly selected student watches TV for 5 hours a day, what is the predicted number of servings of fruits/vegetables. (Round your answer to 1 decimal place).