Refer to Exercise 13.20. In Example 4, the experimenters also obtained the nine responses for adhesion. The business wants adhesion greater than 45 grams.

\[\begin{array}{llllllllll} \text { Adhesion } & 10 & 48 & 41 & 40 & 39 & 44 & 24 & 31 & 44 \end{array}\]

Repeat the analysis in Example 4 but change the response to adhesion.

Data From Example 4

Data From Exercise 13.20

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EXAMPLE 4 A response surface design to maximize yield A compound is produced for a coating process. It is added to an otherwise fixed recipe and the coating process is completed. Yield is the response variable. Two factors x and x2 have been identified as "vital," and they are Factor (xi) Additive amount Reaction temperature Range 0-70 gm/kg 100-180C The goal of the experiment is to improve the yield. The business requires that yield be greater than 95%.