SCENARIO 18-9 What Are the Factors That Determine the Acceleration Time (In

question 91

Multiple Choice

SCENARIO 18-9
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.
A Roadmap for Analyzing Data 18-63
18-64 A Roadmap for Analyzing Data
-Referring to Scenario 18-9, what is the correct interpretation for the estimated coefficient for
MPG?

• A) As the miles per gallon decreases by one unit, the mean 0 to 60 miles per hour acceleration time will increase by an estimated 0.0620 seconds without taking into Consideration all the other independent variables included in the model.
• B) As the 0 to 60 miles per hour acceleration time decreases by one second, the mean miles per gallon will increase by an estimated 0.0620 unit without taking into consideration all The other independent variables included in the model.
• C) As the miles per gallon decreases by one unit, the mean 0 to 60 miles per hour acceleration time will increase by an estimated 0.0620 seconds taking into consideration All the other independent variables included in the model.
• D) As the 0 to 60 miles per hour acceleration time decreases by one second, the mean miles per gallon will increase by an estimated 0.0620 unit taking into consideration all the Other independent variables included in the model.

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Definitions:

Relearning

The process of learning material or skills that were once learned and then forgotten, which often requires less time than the initial learning.

Short-Term Memory

The part of the memory system that is responsible for temporarily holding small amounts of information in an active, readily available state for a short period of time.

Explicit Memory

A type of long-term memory involving the conscious recall of facts and experiences.

Implicit Memory

Refers to the unconscious memory of skills and how to perform tasks.