The following table compares us population millions with us, Ask an Expert

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The following table compares U.S. population (millions) with U.S. per-capita consumption of bottled water (gallons).

Source: Bureau of the Census, Statistical Abstract of the United States 2009, pp. 10, 134.

a. Determine the least-squares regression line for pre- dicting the percentage of males who are overweight based on the number of calories consumed per day.

b. Calculate and interpret the values of r and r2.

c. If a nation's males were to consume an average of 3000 calories per day, what would be the predicted percentage of the nation's males who are overweight?

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