A study was performed on a type of bearing to nd the
Chapter 12, Problem 12.13(choose chapter or problem)
A study was performed on a type of bearing to nd the relationship of amount of wear y to x1 = oil viscosity and x2 = load. The following datawere obtained. (From Response Surface Methodology, Myers, Montgomery, and Anderson-Cook, 2009.) yx 1 x2 yx 1 x2 193 172 113 1.6 22.0 33.0 851 1058 1357 230 91 125 15.5 43.0 40.0 816 1201 1115 (a) Estimate the unknown parameters of the multiple linear regression equation Y|x1,x2 = 0 + 1x1 + 2x2.(b) Predict wear when oil viscosity is 20 and load is 1200.
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