Is there a relationship between the protein content (in grams) and the calorie content of items sold at fast food restaurants?The scatterplot below shows the results of an analysis of 126 fast food items.For each item, the protein and calorie contents were measured.To predict calorie content based on protein content, the following regression equation was constructed:Predicted calories = 199.6 + 13.4 (grams of protein).The regression equation explains 67.1% of the variability in calories.

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