Carbon footprint. The scatterplot shows, for 2008 cars, the carbon footprint (tons of CO2 per year) vs.

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Carbon footprint. The scatterplot shows, for 2008 cars, the carbon footprint (tons of CO2 per year) vs. the new Environmental Protection Agency (EPA) highway mileage for 82 family sedans as reported by the U.S. government

(www.fueleconomy.gov/feg/byclass.htm). The car with the highest highway mpg and lowest carbon footprint is the Toyota Prius.

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a) The correlation is . Describe the association.

b) Are the assumptions and conditions met for computing correlation?

c) Using technology, find the correlation of the data when the Prius is not included with the others. Can you explain why it changes in that way?

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Business Statistics

ISBN: 9780321716095

2nd Edition

Authors: Norean D. Sharpe, Paul F. Velleman, David Bock, Norean Radke Sharpe

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