Coal gas is produced at a gasworks. Pollutants in the gas are removed by scrubbers, which become less and less efficlent as time goes on. Thefollowing measurements, made at the start of each month, show the rate at which pollutants are escaping (In tons/month) in the gas:Time (months) 01 2 34 5 6Rate (tons/month) 8 12 17 24 3241 50A. Make an overestimate and an underestimate of the total quantity of pollutants that escape during the first month.overestimate =E tonsunderestimate =tonsB. Make an overestimate and an underestimate of the total quantity of pollutants that escape for the whole six months for which we have data.overestimate =underestimate =Note: You can eam partial credit on this problem

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Answered: Coal gas is produced at a gasworks.…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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The efficiency for a steel specimen immersed in a phosphating tank is the weight of the phosphate coating divided by the metal loss (both in mg/ft?). An article gave the accompanying data on tank temperature (x) and efficiency ratio (y). Temp. 173 175 176 177 177 178 179 180 Ratio 0.94 1.21 1.44 1.05 1.09 1.02 0.96 1.88 Temp. 183 183 183 183 183 184 184 185 Ratio 1.53 1.50 1.57 2.07 2.05 0.86 1.53 0.80 Temp. 185 185 185 187 187 188 189 191 Ratio 1.71 1.96 2.76 1.59 2.60 3.10 1.81 3.18 In USE SALT (a) Determine the equation of the estimated regression line. (Round all numerical values to four decimal places.) (b) Calculate a point estimate for true average efficiency ratio when tank temperature is 185. (Round your answer to four decimal places.) (c) Calculate the values of the residuals from the least squares line for the four observations for which temperature is 185. (Round your answers to two decimal places.) (185, 0.80) (185, 1.71) (185, 1.96) (185, 2.76) Why do they not all have…
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