Statistics Plus New MyLab Statistics with Pearson eText -- Access Card Package (13th Edition)
13th Edition
ISBN: 9780134090436
Author: James T. McClave, Terry T Sincich
Publisher: PEARSON
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Textbook Question
Chapter 12.8, Problem 12.93ACI
Chemical plant contamination. Refer to Exercise 12.180 (p. 701) and the model relating the mean DDT level E(y) of contaminated fish to x1 = miles captured upstream, x2 = length, and x3 = weight. Now consider a model for E(y) as a
- a. Set up the appropriate dummy variables for species.
- b. Write the equation of a model that proposes parallel straight-line relationships between mean DDT level E(y) and weight, one line for each species.
- c. Write the equation of a model that proposes nonparallel straight-line relationships between mean DDT level E(y) and weight, one line for each species.
- d. Fit the model, part bf to the data saved in the file. Give the least squares prediction equation.
- e. Refer to part d. Interpret the value of the least squares estimate of the beta coefficient multiplied by weight.
- f. Fit the model, part c, to the data saved in the file. Give the least squares prediction equation.
- g. Refer to part f. Find the estimated slope of the line relating DDT level (y) to weight for the channel catfish species.
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Chapter 12 Solutions
Statistics Plus New MyLab Statistics with Pearson eText -- Access Card Package (13th Edition)
Ch. 12.3 - Write a first-order model relating E(y) to a. two...Ch. 12.3 - Minitab was used to fit the model E(y) = (0 + 1x1...Ch. 12.3 - Suppose you fit the multiple regression model y =0...Ch. 12.3 - Suppose you fit the first-order multiple...Ch. 12.3 - Prob. 12.5LMCh. 12.3 - Prob. 12.6LMCh. 12.3 - Prob. 12.7LMCh. 12.3 - If the analysis of variance F-test leads to the...Ch. 12.3 - Ambiance of 5-star hotels. Although invisible and...Ch. 12.3 - Forecasting movie revenues with Twitter. Refer to...
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Refer to the...Ch. 12.6 - Write a second-order model relating the mean of y,...Ch. 12.6 - Prob. 12.50LMCh. 12.6 - Prob. 12.51LMCh. 12.6 - Prob. 12.52LMCh. 12.6 - Minitab was used to fit the complete second-order...Ch. 12.6 - Personality traits and job performance. When...Ch. 12.6 - Going for it on fourth-down in the NFL. Refer to...Ch. 12.6 - Prob. 12.56ACBCh. 12.6 - Prob. 12.57ACBCh. 12.6 - Assertiveness and leadership. Management...Ch. 12.6 - Goal congruence in top management teams. Do chief...Ch. 12.6 - Prob. 12.60ACICh. 12.6 - Revenues of popular movies. 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