Using data set G, answer the questions given below.

DATA SET G Mileage and Vehicle Weight

(n= 73 vehicles)VehicleCity MPGWeightVehicleCity MPGWeightAcura CL203,968Land Rover Range Rover Sport135,137Audi A5223,583Lexus IS 250213,461BMW 4 Series 428i223,470Lexus LS 460164,233BMW X1 sDrive28i233,527Lexus RX 350184,178Buice LaCrosse183,990Lincoln MKT174,702Buick Enclave174,724Lincoln MKZ223,713Buick Regal213,692Lincoln Navigator145,794Cadillac ATS223,315Mazda 2282,306Cadillac CTS203,616Mazda CX-5 Sport263,194Cadillac Escalade145,527Mercedes-Benz C-250223,428Chevrolet Camaro 1SS163,719Mercedes-Benz CL600124,894Chevrolet Cruze LS263,097Mercedes-Benz ML350174,751Chevrolet Impala LTZ193,800Mini-Cooper292,605Chevrolet Malibu 2LT253,532Mitsubishi Outlander Sport SE253,296Chevrolet Spark LS312,269Nissan Armada SV135,267Chevrolet Suburban LTZ155,674Nissan Cube S252,789Chrysler 200 Touring LX203,402Nissan Maxima SV193,570Chrysler 300 S194,029Nissan Murano SV184,011Dodge Charger SXT163,996Nissan Versa S272,363Dodge Dart Limited233,242Porsche Cayenne154,398Fiat 500 Sport312,434Scion FR-S252,806Ford Fiesta S292,575Scion iQ362,127Ford FocusSE272,960Scion XD272,665Ford Mustang GT153,618Suburu Forester 2.5i Limited243,419Ford Taurus194,054Suburu Legacy 2.5i Limited243,427Honda Accord LX243,192Toyota Camry XLE253280Honda CRV LX233,305Toyota Land Cruiser135,765Hyundai Azera Limited193,605Toyota RAV4 XLE243,465Hyundai Genesis 5.0154,240Toyota Yaris302,295Hyundai Santa Fe GLS183,933Volkswagen Beetle 2.5L223,038Infiniti Q60193,633Volkswagen Jetta SE253,070Infiniti QX50173,790Volkswagen Toureg V6 Sport174,711Jaguar F-Type203,477Volkswagen Passat SE243,230Jeep Compass Limited213,258Volvo S60 T5213,528Jeep Grand Cherokee Limited174,685Volvo XC90164,667Kia Forte LX252,776Kia Soul242,615Kia Sportage LX213,186

Click here for the Excel Data Set G

Choose the dependent variable (theresponse variableto be "explained") and the independent variable (thepredictororexplanatory variable).

(a-1)Dependent Variable

multiple choice 1

• City MPG
• Weight

(a-2)Independent Variable

Weight

(b)Obtain the regression equation.(Negative values should be indicated by a minus sign. Round your answers to 4 decimal places.)

Y=X+

(c)CalculateR².(Round your answer to 4 decimal places.)

R²

(d-1)Zero is contained in the 95% confidence interval.

No

(d-2)The slope is different from zero.

No

(e)Calculate the degrees of freedom andt-critical fora two-tailedttest for zero slope at =5 .05.(Round your answers to 2 decimal places.)

Degrees of freedomt -critical

(f-1)Smallp-values tell us the null hypothesis is false.

multiple choice 5

• No
• Yes

(f-2)The sample provides significant evidence that the slope is negative.

Yes