A new method for the determination of anthracene in crude oil is in the developmental phase. Preliminary results using the new method give a standard deviation of 3 ppm when 5 replicates are used. The ‘traditional’ method gives a standard deviation of 7 ppm when 4 replicates are used. Is there a significant difference in the standard deviations for these methods at 95% CL?
A new method for the determination of anthracene in crude oil is in the developmental phase. Preliminary results using the new method give a standard deviation of 3 ppm when 5 replicates are used. The ‘traditional’ method gives a standard deviation of 7 ppm when 4 replicates are used. Is there a significant difference in the standard deviations for these methods at 95% CL?
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
ChapterA1: Evaluation Of Analytical Data
Section: Chapter Questions
Problem A1.9QAP
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A new method for the determination of
anthracene in crude oil is in the developmental phase. Preliminary results using the new method give a standard deviation of 3 ppm when 5 replicates are used. The ‘traditional’ method gives a standard deviation of 7 ppm when 4 replicates are used. Is there a significant difference in the standard deviations for these methods at 95% CL?
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