The following data are representative of those reported in an article on nitrogen emissions, with x =
Question:
The following data are representative of those reported in an article on nitrogen emissions, with x = burner area release rate (MBtu/hr-ft 2 ) and y = NOx emission rate (ppm):
X | 100 | 125 | 125 | 150 | 150 | 200 | 200 | 250 | 250 | 300 | 300 | 350 | 400 | 400 |
y | 150 | 140 | 180 | 210 | 200 | 310 | 280 | 400 | 420 | 440 | 390 | 590 | 610 | 680 |
(a) Assuming that the simple linear regression model is valid, obtain the least squares estimate of the true regression line. (Round all numerical values to four decimal places.)
y = ??? (b) What is the estimate of the expected NOx
emission rate when the burner area release rate is equal to 220? (Round your answer to two decimal places.)
(c) Estimate the amount by which you expect the NO x emission rate to change when the burner area release rate is reduced by 60 . (Round your answer to two decimal places.)
Probability And Statistics For Engineering And The Sciences
ISBN: 9781305251809
9th Edition
Authors: Jay L. Devore