I only need help with question E. 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                     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 Variablecity MPG  (a-2) Independent VariableWeight  (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       0.7959     (d-1) Zero is contained in the 95% confidence interval. No  (d-2) The slope is different from zero.   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 ±

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I only need help with question E.

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                
 

 
 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
city MPG


 
(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) Calculate R2(Round your answer to 4 decimal places.)
  
R2       0.7959    
 
(d-1) Zero is contained in the 95% confidence interval.
 No

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

  • 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 ± 

 

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