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 12.5, Problem 12.48ACI

Cooling method for gas turbines. Refer to the Journal of Engineering for Gas Turbines and Power (January 2005) study of a high-pressure inlet fogging method for a gas turbine engine, Exercise 12.19 (p. 702). Recall that you fit a first-order model for heat rate (y) as a function of speed (x₁), inlet temperature (x₂) , exhaust temperature (x₃) , cycle pressure ratio (x₄), and airflow rate (x₅).

a. Researchers hypothesize that the linear relationship between heat rate (y) and temperature (both inlet and exhaust) depends on airflow rate. Write a model for heat rate that incorporates the researchers’ theories.
b. Use statistical software to fit the interaction model, part a, to the data. Give the least squares prediction equation.
c. Conduct a test (at α = .05 ) to determine whether inlet temperature and airflow rate interact to affect heat rate.
d. Conduct a test (at α = .05 ) to determine whether exhaust temperature and airflow rate interact to affect heat rate.
e. Practically interpret the results of the tests, parts c and d.

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Chapter 12.5, Problem 12.47ACI

Chapter 12.6, Problem 12.49LM

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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. 12.5LM Ch. 12.3 - Prob. 12.6LM Ch. 12.3 - Prob. 12.7LM Ch. 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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Solution Summary: The author explains the model that determines the heat rate (y) that incorporates a researcher's theory.

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