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

question 14

True/False

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, the 0 to 60 miles per hour acceleration time of a sedan is predicted to be 0.7679 seconds higher than that of an SUV.

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Definitions:

Confidence Interval

A range of values that is likely to contain the true value of an unknown parameter, often used in statistical analysis to indicate the reliability of an estimate.

Two-proportion Z-test

A statistical test used to compare two population proportions to determine if they are different.

Null Hypothesis

In statistical hypothesis testing, it represents the hypothesis that there is no significant difference or effect, serving as the default or initial assumption.

Margin of Error

The amount of error that can be tolerated in statistical results, representing the range within which the true population parameter is expected to lie.