Problem Statement: You measure the concentration of NOx from the exhaust pipe of a vehicle as you change the engine speed.
Engine Speed NOx Concentration
(X1000 rpm) (ppm)
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0.05 50
0.2 47
1.6 30
1.8 32
2.0 34
2.5 39
Find an equation that best describes the NOx pollutant emission
as a function of engine speed. Justify why you chose the
particular form and the number of terms you have. Numerically
find the coefficients in your equation via regression analysis.
Estimate the NOx concentration if you were to run the engine at 1000 rpm.
Solution:
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