Comment on the two designs you round Myers Montgomery and An

Comment on the two designs you round. Myers, Montgomery and Anderson-Cook (2009) describe a gasoline blending experiment involving three mixture components. There are no constraints on the mixture proportions, and the following 10-tun design is used: What type of design did the experimenters use? Fit a quadratic mixture model to the data. Is this model adequate? Plot the response surface contours. What blend would you recommend to maximize the miles per gallon?

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