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Chicken sandwiches are often advertised as a healthier alternative to beef because
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Chicken sandwiches are often advertised as a healthier alternative to beef because many are lower in fat. Data from tests on 15 different sandwiches randomly selected from a website that provides nutritional data for fast food sandwiches. A linear model is appropriate for this data. The regression equation for the relationship between the amount of fat in a chicken sandwich (independent variable) and the number of calories in the sandwich (dependent variable) is 

   1. Explain the meaning of the slope in the context of this problem.

2. Explain the meaning of the intercept in the context of this problem. Does it make sense to interpret the intercept in this situation?

3. What does it mean if a certain sandwich has a negative residual?

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