In exercise 12 28, we have the following data concerning wear of a bearing (a) The following model may be considered to describe this data y i 00 1 x l , 2 x 2 12 x 1, x 2 i i, for i 1, 2 6 The X2 is an interaction ' term Fit this model and estimate the parameters (b) Use the models (x), (x 1 , x 2...

a 12586555 7758641 009430x2 000919x1x2 b The following i ...

In exercise 12.28, we have the following data concerning wear of a bearing: (a) The following model

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In exercise 12.28, we have the following data concerning wear of a bearing:

(a) The following model may be considered to describe this data: y i = 00 + ?₁x_l, + ?₂x₂ + ?₁₂x_1,?x₂i + ? i, for i = 1, 2... 6. The %X2 is an "interaction"' term. Fit this model and estimate the parameters.

(b) Use the models (x), (x₁, x₂), (x₂). (x₁, x₂, x₁x₂) and compute PRESS, Cp, and s" to determine the 'best'' model.

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Probability & Statistics For Engineers & Scientists

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7th Edition

Authors: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying

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Question Posted: Feb 03, 2011 04:01 AM

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In exercise 12.28, we have the following data concerning wear of a bearing: (a) The following model

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(wear) 2 (load) (oiLviscosity) 1.6 15.5 22.0 193 230 172 91 851 816 1058 1201 1357 1115 43.0 33.0 40.0 113 125

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