13th Edition

ISBN: 9780134613949

Author: MCCLAVE

Publisher: PEARSON

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Textbook Question

Chapter 12.9, Problem 12.103ACB

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). Consider a model for heat rate (kilojoules per kilowatt per hour) of a gas turbine as a function of cycle speed (revolutions per minute) and cycle pressure ratio. The data are saved in the file.

a. Write a complete second-order model for heat rate (y).
b. Give the null and alternative hypotheses for determining whether the curvature terms in the complete second-order model are statistically useful for predicting heat rate (y).
c. For the test in part b, identify the complete and reduced model.
d. The complete and reduced models were fit and compared using SPSS. A summary of the results are shown in the accompanying SPSS printout. Locate the value of the test statistic on the printout.
e. Find the rejection region for α=.10 and locate the p-value of the test on the printout.
f. State the conclusion in the words of the problem.

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Chapter 12.9, Problem 12.102ACB

Chapter 12.9, Problem 12.104ACB

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Solution Summary: The author explains the complete second order model for the heat rate (y).

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