Solution Found!
Contamination from a plant’s discharge. Refer to theU.S.
Chapter 12, Problem 128E(choose chapter or problem)
Problem 128E
Contamination from a plant’s discharge. Refer to theU.S. Army Corps of Engineers data on fish contaminatedfrom the toxic discharges of a chemical plant locatedon the banks of the Tennessee River in Alabama. InExercise 12.18 (p. 683), you fit the first-order model,E(y) = β0 + β1x1 + β2x2 + β3x3, where y = DDT levelin captured fish, x1 = miles captured upstream, x2 = fishlength, and x3 = fish weight. Conduct a complete residual analysis for the model. Do you recommend anymodel modifications be made? Explain.
Questions & Answers
QUESTION:
Problem 128E
Contamination from a plant’s discharge. Refer to theU.S. Army Corps of Engineers data on fish contaminatedfrom the toxic discharges of a chemical plant locatedon the banks of the Tennessee River in Alabama. InExercise 12.18 (p. 683), you fit the first-order model,E(y) = β0 + β1x1 + β2x2 + β3x3, where y = DDT levelin captured fish, x1 = miles captured upstream, x2 = fishlength, and x3 = fish weight. Conduct a complete residual analysis for the model. Do you recommend anymodel modifications be made? Explain.
ANSWER:
Step 1 of 9
For the given information, the fitted first-order model is
Where y=DDT level in captured ?sh, 
We have to conduct a complete residual analysis for the model to check the model
assumption.
Now compute the required regression analysis using MINITAB by following the
instructions:
Step 1: Type or import the data into five columns.