- 4 You Would Like To Compare The Accuracy Of A Newly Developed Method Nir Chemometric Method In The Determination Of Pb 1 (66.34 KiB) Viewed 24 times
4. You would like to compare the accuracy of a newly developed method NIR- chemometric method in the determination of Pb in gasoline with the ASTM standard method. In this case, a gasoline sample was subdivided into SIXTEEN (16) homogeneous portions; where half of them were analysed with the standard method and the other half by the proposed method. The results are shown below: Method ASTM Method NIR-chemometric Method Mean / mg kg-¹ 0.1988 0.1513 Standard deviation / mg kg-¹ 0.0275 0.0210 Support your claims based on the outcomes of appropriate statistical tests at a significance level of 0.05. Given that F = 4.99 and tc = 2.145.