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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, there is enough evidence to conclude that SUV makes a significant contribution to the regression model in the presence of the other independent variables at a 5% level of significance.
Homeobox Transcription Factors
Proteins that bind DNA and regulate the expression of genes crucial for the development and structural layout of an organism.
Homeodomains
DNA-binding motifs found in transcription factors that are crucial for the regulation of development and gene expression.
Induced Pluripotent Stem Cells
Cells generated from adult cells that have been reprogrammed to an embryonic-like state, capable of developing into different types of cells.
Homeotic Factors
Genes that regulate the development of anatomical structures in various organisms, ensuring that body parts form in the correct locations.
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