Constraints on the mixture components are shown below.

(a) Use the Xvert function in the mixexp package to nd the extreme ver-
tices of the experimental region, and check to see if the ones listed in Table 11.9 form an extreme vertices design.

(b) Given the data from Anik and Sukumar (1981) experiments shown in Ta-
ble 11.9, t the Schee quadratic model to the four mixture components that are not constant.

Transcribed Image Text:

0.10 x 0.40 0.10 < x2 < 0.40 0.00 x 0.08 0.30 x 0.70 x5 = 0.10