The following table gives the city and highway mileages (miles per gallon) for 22 two-seaters listed for the 2002 model year. Obs. ID 1 Model Acura NSX City 17 Highway 24 Obs. ID 12 Audi TT Quattro 20 2 3 4 5 6 7 8 9 10 11 Audi TT Roadster 22 BMW M Coupe 17 BMW Z3 Coupe 19 BMW Z3 Roadster 20 BMW Z8 13 Chevrolet Corvette 18 Chrysler Prowler 18 Ferrari 360 Modena Ford Thurderbird 17 11 28 31 25 27 27 21 25 23 16 23 13 14 15 16 17 18 19 20 21 22 Model Honda Insight Honda S2000 Lamborghini |Murcielago Mazda Miata Mercedes-Benz SL500 Mercedes-Benz SL600 Mercedes-Benz SLK230 Porsche Boxster City 57 Toyota MR2 20 9 22 16 13 Mercedes-Benz SLK320 Porsche 911 GT2 15 23 20 19 25 Highway 56 26 13 28 23 19 30 26 22 27 30 Find the least-squares regression line for predicting highway mileage from city mileage, using data from all 22 car models. Use R to obtain the residuals. Make residual plot (residuals against city mileage). Which car has the largest negative ordinary residual? Provide its Obs. ID (for example, if it were the Acura NSX, your answer would be 1 ).

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