TABLE 14-16 What Are the Factors That Determine the Acceleration Time (In

question 41

Multiple Choice

TABLE 14-16
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.






-Referring to 14-16, what is the correct interpretation for the estimated coefficient for SUV?

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion in a set of values.

Null Hypothesis

In testing, it is the presumption that no effect or no difference exists in the population, serving as the hypothesis that is formally tested.

P-value

A measure in statistical hypothesis testing that helps in determining the significance of results, indicating the probability of observing the data if the null hypothesis is true.

Simple Random Sample

A sample drawn in such a way that every member of the population has an equal chance of being selected.