Fit the general quadratic model to the ceramic pipe data in Table 10.13. (a) Fit the model

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Fit the general quadratic model to the ceramic pipe data in Table 10.13.

(a) Fit the model with the lmer function including the random whole plot eects.

(b) Fit the model with the rsm function ignoring the random whole plot eects.

(c) Verify that the regression coecients are the same for both models, but that the standard errors of the coecients are dierent.

(d) What procedure would you use to t the model in order to determine if the model can be simplied by dropping a factor?

(e) What procedure would you use to do a canonical or ridge analysis to determine the strongest pipe?

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Design And Analysis Of Experiments

ISBN: 9780471661597

6th International Edition

Authors: Douglas C. Montgomery

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Question Posted: Sep 19, 2024 05:02 PM

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Fit the general quadratic model to the ceramic pipe data in Table 10.13. (a) Fit the model

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Design And Analysis Of Experiments

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