Question: Sometimes experimenters prefer to use a spherical central composite design
Sometimes experimenters prefer to use a spherical central composite design in which the axial distance is a = √k , where k is the number of design factors. Is the spherical design similar to the rotatable design? Are there cases where the spherical design is also rotatable?
Answer to relevant QuestionsConsider the response model in equation 14.5. Suppose that in the response model we allow for a complete second-order model in the noise factors so that What effect does this have on the variance model? An article in Rubber Chemistry and Technology (Vol. 47, 1974, pp. 825–836) describes an experiment that studies the relationship of the Mooney viscosity of rubber to several variables, including silica filler (parts per ...Draw the primary and supplementary OC curves for a double-sampling plan with n1 = 50, c1 = 2, n2 = 100, and c2 = 6. If the incoming lots have fraction nonconforming p = 0.05, what is the probability of acceptance on the ...A product is shipped in lots of size N = 2,000. Find a Dodge–Romig single-sampling plan for which the LTPD = 1%, assuming that the process average is 0.25% defective. Draw the OC curve and the ATI curve for this plan. ...Find a single-sampling plan for which p1 = 0.05, = 0.05, p2 = 0.15, and = 0.10.
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