SCENARIO 18-9 What Are the Factors That Determine the Acceleration

question 209

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. SCENARIO 18-9 cont. The various residual plots are as shown below. SCENARIO 18-9 cont. SCENARIO 18-9 cont. The coefficient of partial determination of each of the 5 predictors are, respectively, 0.0380, 0.4376, 0.0248, 0.0188, and 0.0312. The coefficient of multiple determination for the regression model using each of the 5 variables as the dependent variable and all other X variables as independent variables ( ) are, respectively, 0.7461, 0.5676, 0.6764, 0.8582, 0.6632.
-Referring to Scenario 18-9, what is the correct interpretation for the estimated coefficient for Cargo Vol?

• A)As the 0 to 60 miles per hour acceleration time increases by one second, the mean cargo volume will increase by an estimated 0.0259 cubic foot without taking into Consideration all the other independent variables included in the model.
• B)As the cargo volume increases by one cubic foot, the mean 0 to 60 miles per hour acceleration time will increase by an estimated 0.0259 seconds without taking into Consideration all the other independent variables included in the model.
• C)As the 0 to 60 miles per hour acceleration time increases by one second, the mean cargo volume will increase by an estimated 0.0259 cubic foot taking into Consideration all the other independent variables included in the model.
• D)As the cargo volume increases by one cubic foot, the mean 0 to 60 miles per hour acceleration time will increase by an estimated 0.0259 seconds taking into Consideration all the other independent variables included in the model.

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Definitions:

Modern Leadership Theories

Contemporary concepts and models that explore and explain effective leadership styles and strategies in various organizational contexts.

Contingency Perspective

An approach in management that holds that there are no universal rules or principles that apply to all businesses or situations, and that management strategies should vary depending on the circumstances.

Situational Demands

External factors or necessities that influence how a person behaves or performs in various contexts.

Fiedler's Contingency Model

A theory positing that leadership effectiveness is contingent upon the match between a leader’s style of interacting with subordinates and the degree to which the situation gives control and influence to the leader.