Experimenter using a composite design

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Reference no: EM131832289

The following data were collected by an experimenter using a- composite design:

1790_experimenter using a- composite design.png

Assume that a second-degree equation is to be fitted to these data using the method of least squares. (a) What is the matrix of independent variables?

(b) Set up the normal equations that would have to be solved to obtain the least squares estimates b₀, b₁, b₂, b₁₂, b₁₁, and b₂₂·

(d) Criticize the analysis.

Reference no: EM131832289

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