Two chemical engineers, A and B, are working independently to develop a model to predict the viscosity

Question:

Two chemical engineers, A and B, are working independently to develop a model to predict the viscosity of a product (y) from the pH (x1) and the concentration of a certain catalyst (x2). Each engineer has fit the linear model
y = Î²0 + Î²1x1 + Î²2x2 + Îµ
The engineers have sent you output summarizing their results:

The engineers have also sent you the following scatterplots of pH versus concentration, but forgot to put their names on them.

a. Which plot came from which engineer? How do you know?
b. Which engineer's experiment produced the more reliable results? Explain.

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Statistics For Engineers And Scientists

ISBN: 9780073376332

3rd Edition

Authors: William Navidi

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Question Posted: May 17, 2016 07:57 AM

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Two chemical engineers, A and B, are working independently to develop a model to predict the viscosity

Question:

Engineer A Predictor Constant Coef 199.2 1.569 -4.730 SE Coef 0.5047 0.4558 0.5857 394.7 -3.44 -8.08 0.000 0.007 0.000 Concent. Engineer B Predicton Constant pH Concent. Coef 199.0 1.256 3.636 SE Coef 0.548 1.983 1.952 363.1 -0.63 0.000 0.544 0.112 pH pH Concentration Concentration 1

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a Plot i came from Engineer B and plot ii came from Engineer A We know this because th...View the full answer

Statistics For Engineers And Scientists

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