TABLE 17-9 What Are the Factors That Determine the Acceleration Time (In

question 278

True/False

TABLE 17-9
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 ( )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 ( )are,respectively,0.7461,0.5676,0.6764,0.8582,0.6632.
-True or False: Referring to Table 17-9,there is enough evidence to conclude that Cargo Vol makes a significant contribution to the regression model in the presence of the other independent variables at a 5% level of significance.

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Definitions:

Price Floor

A government or group-imposed limit that prevents prices of goods or services from falling below a certain level.

Equilibrium Price

The price in the market where the amount of products offered matches the amount of products people want to buy.

Quantity Supplied

The amount of a good or service that producers are willing and able to sell at a particular price over a specified period.

Rent Controls

Government-imposed limits on the amount landlords can charge for leasing a home or apartment.