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SCENARIO 18-9
What are the factors that determine the acceleration time (in sec. )from 0 to 60 miles per hour of a car? Data on the following variables for 171 different vehicle models were collected:
Accel Time: Acceleration time in sec.
Cargo Vol: Cargo volume in cu.ft.
HP: Horsepower MPG: Miles per gallon
SUV: 1 if the vehicle model is an SUV with Coupe as the base when SUV and Sedan are both 0 Sedan: 1 if the vehicle model is a sedan with Coupe as the base when SUV and Sedan are both 0
The regression results using acceleration time as the dependent variable and the remaining variables as the independent variables are presented below.
The various residual plots are as shown below.
The coefficient of partial determination ( R2 yj.(All variables except j ) )of each of the 5 predictors are, respectively,0.0380,0.4376,0.0248,0.0188,and 0.0312.
The coefficient of multiple determination for the regression model using each of the 5 variables X j as the dependent variable and all other X variables as independent variables ( R2 j )are,respectively, 0.7461,0.5676,0.6764,0.8582,0.6632.
-Referring to Scenario 18-9,what is the value of the test statistic to determine whether Cargo Vol makes a significant contribution to the regression model in the presence of the other independent variables at a 5% level of significance?
Market Level
Refers to the overall condition or status of a market, including factors like total supply, demand, price levels, and market participants.
External Benefits
Benefits that are enjoyed by individuals or firms who did not directly participate in the transaction or activity that produced the benefit, also known as positive externalities.
Marginal Cost Curve
A graphical representation showing how the cost of producing one additional unit of a good varies as production increases.
Industry Supply
The total amount of a product or service that all producers in a market are willing and able to sell at a given price.
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