Using data set G, answer the questions given below. DATA SET G Mileage and Vehicle Weight
(n = 73 vehicles)
Vehicle City MPG Weight Vehicle City MPG Weight
Acura CL 20 3,968 Land Rover Range Rover Sport 13 5,137
Audi A5 22 3,583 Lexus IS 250 21 3,461
BMW 4 Series 428i 22 3,470 Lexus LS 460 16 4,233
BMW X1 sDrive28i 23 3,527 Lexus RX 350 18 4,178
Buice LaCrosse 18 3,990 Lincoln MKT 17 4,702
Buick Enclave 17 4,724 Lincoln MKZ 22 3,713
Buick Regal 21 3,692 Lincoln Navigator 14 5,794
Cadillac ATS 22 3,315 Mazda 2 28 2,306
Cadillac CTS 20 3,616 Mazda CX-5 Sport 26 3,194
Cadillac Escalade 14 5,527 Mercedes-Benz C-250 22 3,428
Chevrolet Camaro 1SS 16 3,719 Mercedes-Benz CL600 12 4,894
Chevrolet Cruze LS 26 3,097 Mercedes-Benz ML350 17 4,751
Chevrolet Impala LTZ 19 3,800 Mini-Cooper 29 2,605
Chevrolet Malibu 2LT 25 3,532 Mitsubishi Outlander Sport SE 25 3,296
Chevrolet Spark LS 31 2,269 Nissan Armada SV 13 5,267
Chevrolet Suburban LTZ 15 5,674 Nissan Cube S 25 2,789
Chrysler 200 Touring LX 20 3,402 Nissan Maxima SV 19 3,570
Chrysler 300 S 19 4,029 Nissan Murano SV 18 4,011
Dodge Charger SXT 16 3,996 Nissan Versa S 27 2,363
Dodge Dart Limited 23 3,242 Porsche Cayenne 15 4,398
Fiat 500 Sport 31 2,434 Scion FR-S 25 2,806
Ford Fiesta S 29 2,575 Scion iQ 36 2,127
Ford Focus SE 27 2,960 Scion XD 27 2,665
Ford Mustang GT 15 3,618 Suburu Forester 2.5i Limited 24 3,419
Ford Taurus 19 4,054 Suburu Legacy 2.5i Limited 24 3,427
Honda Accord LX 24 3,192 Toyota Camry XLE 25 3280
Honda CRV LX 23 3,305 Toyota Land Cruiser 13 5,765
Hyundai Azera Limited 19 3,605 Toyota RAV4 XLE 24 3,465
Hyundai Genesis 5.0 15 4,240 Toyota Yaris 30 2,295
Hyundai Santa Fe GLS 18 3,933 Volkswagen Beetle 2.5L 22 3,038
Infiniti Q60 19 3,633 Volkswagen Jetta SE 25 3,070
Infiniti QX50 17 3,790 Volkswagen Toureg V6 Sport 17 4,711
Jaguar F-Type 20 3,477 Volkswagen Passat SE 24 3,230
Jeep Compass Limited 21 3,258 Volvo S60 T5 21 3,528
Jeep Grand Cherokee Limited 17 4,685 Volvo XC90 16 4,667
Kia Forte LX 25 2,776
Kia Soul 24 2,615
Kia Sportage LX 21 3,186

picture Click here for the Excel Data Set G

Choose the dependent variable (the response variable to be "explained") and the independent variable (the predictor or explanatory variable).

(a-1) Dependent Variable

multiple choice 1
City MPG
Weight

(a-2) Independent Variable

multiple choice 2
Weight
City MPG

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

Y =
X +

(c) Calculate R2. (Round your answer to 4 decimal places.)

R2

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

multiple choice 3
No
Yes

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

multiple choice 4
No
Yes

(e) Calculate the degrees of freedom and t-critical for a two-tailed t test for zero slope at α = 5 .05. (Round your answers to 2 decimal places.)

Degrees of freedom
t - critical ±

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

multiple choice 5
Yes
No

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

multiple choice 6
No
Yes