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| Teaching Since: | May 2017 |
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| Questions Answered: | 66690 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
4.24 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 4.13 (p. 188). Recall that you fit a first- order model for heat rate (y) as a function of
MINITAB Output for Exercise 4.24
speed (x1), inlet temperature (x2), exhaust tem- perature (x3), cycle pressure ratio (x4), and air flow rate (x5) to data saved in the GASTUR- BINE file. A MINITAB printout with both a 95% confidence interval for E(y) and prediction interval for y for selected values of the x’s is shown below.

(a) Interpret the 95% prediction interval for y in the words of the problem.
(b) Interpret the 95% confidence interval for
E(y) in the words of the problem.
(c) Will the confidence interval for E(y) always be narrower than the prediction interval for y? Explain.
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