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

question 354

Multiple Choice

SCENARIO 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.
-Referring to Scenario 17-9, which of the following assumptions is most likely violated based on the residual plot of the residuals versus predicted Y?

• A) Independence of errors.
• B) Normality of errors.
• C) Equal variance.
• D) None.

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