We saw in Chapter 7 that the calorie content of a breakfast cereal is linearly associated with its sugar content. Is that the whole story? Here's the output of a regression model that regresses Calories for each serving on its Protein(g), Fat(g), Fiber(g), Carbohydrate(g), and Sugars(g) content.

Assuming that the conditions for multiple regression are met,
a) What is the regression equation?
b) Do you think this model would do a reasonably good job at predicting calories? Explain.
c) To check the conditions, what plots of the data might you want to examine?
d) What does the coefficient of Fat mean in this model?