A particular article presented data on y = tar content (grains/100 ft3) of a gas stream as a function of x1 = rotor speed (rev/min) and x2 = gas inlet temperature (°F). The following regression model using x1, x2, x3 = x22 and x4 = x1x2 was suggested.(mean y value) = 86.5 − 0.124x1 + 5.07x2 − 0.0708x3 + 0.001x4 a.) According to this model, what is the mean y value (in grains/100 ft3) if x1 = 3,200 and x2 = 55. grains/100 ft3

The regression model is Mean y value=86.5-0.124x1+5.07x2-0.0708x3+0.001x4. In the model x3=x22 and…

Answered: A particular article presented data on…

Trigonometry (MindTap Course List)

8th Edition

ISBN:9781305652224

Author:Charles P. McKeague, Mark D. Turner

Publisher:Charles P. McKeague, Mark D. Turner

Chapter4: Graphing And Inverse Functions

Section: Chapter Questions

Problem 6GP: If your graphing calculator is capable of computing a least-squares sinusoidal regression model, use...

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A particular article presented data on y = tar content (grains/100 ft³) of a gas stream as a function of x₁ = rotor speed (rev/min) and x₂ = gas inlet temperature (°F). The following regression model using x₁, x₂, x₃ = x₂²and x₄ = x₁x₂
was suggested.

(mean y value) = 86.5 − 0.124x₁ + 5.07x₂ − 0.0708x₃ + 0.001x₄

a.) According to this model, what is the mean y value (in grains/100 ft³) if x₁ = 3,200 and x₂ = 55.

grains/100 ft³

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