The article The Value and the Limitations of High-Speed
Chapter 0, Problem 14.12(choose chapter or problem)
The article The Value and the Limitations of High-Speed Turbo-Exhausters for the Removal of Tar-Fog from Carburetted Water-Gas (Society of Chemical Industry Journal [1946]: 166168) presented data on y tar content (grains/100 ft 3 ) of a gas stream as a function of x1 rotor speed (rev/min) and x2 gas inlet temperature (F). A regression model using and x4 x1x2 was suggested: mean y value 86.8 .123x1 5.09x2 .0709x3 .001x4 a. According to this model, what is the mean y value if x1 3200 and x2 57? b. For this particular model, does it make sense to interpret the value of any individual bi (b1, b2, b3, or b4) in the way we have previously suggested? Explain.
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