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TABLE 13-16
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 multiple determination for the regression model using each of the 5 variables Xj as the dependent variable and all other X variables as independent variables (Rj2) are, respectively, 0.7461, 0.5676, 0.6764, 0.8582, 0.6632.
-Referring to Table 13-16, 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?
Active Correlation
A concept in genetics suggesting that an individual’s genes encourage them to seek out environments that complement their inherited traits.
Niche-Picking
Choosing environmental conditions that foster one’s genetically transmitted abilities and interests.
Inherited Preferences
Traits or tendencies passed down from parents to offspring, influencing behaviors such as food choices or habitat preferences.
Reproductive Tract
The system of organs within an organism that works together for the purpose of reproduction, including structures such as the ovaries, fallopian tubes, uterus in females, and the testes and vas deferens in males.
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