# Question

An experiment was run to study the effect of two factors, time and temperature, on the inorganic impurity levels in paper pulp. The results of this experiment are shown in Table 8E.5:

a. What type of experimental design has been used in this study?

b. Fit a quadratic model to the response, using the method of least squares.

a. What type of experimental design has been used in this study?

b. Fit a quadratic model to the response, using the method of least squares.

## Answer to relevant Questions

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