Consider the mixture experiment described by Anderson and McLean

(1974). They presented a problem where the formula for a are was ob-

tained by mixing four chemicals x1: magnesium, x2: sodium nitrate, x3:

strontium nitrate, and x4: binder. Constraints on the components were

(a) Given the data from the experiments in Table 11.10, where the response is y=illumination, t the Schee quadratic model to the data.

(b) Fit the model in Equation (11.9) to the data.

(c) Which model appears to t best? Why? What does this imply?

Transcribed Image Text:

0.40 < 1 < 0.60 0.102 0.50 0.103 0.50 0.03x0.08