Homework - 3(1) - CHM 7142 Winter 2010 Homework-3 Q1(a Can...

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CHM 7142 Winter 2010 Homework -3 Q1 (a) Can you interpret the mean values for the three methods used to determine the peak areas for anthracene and resorcinol for the 2010 student peak area data as revealing a bias (systematic error) associated with the method of measurement ? (b) Is it any easier (measured as precision) to determine the peak area of a well retained peak (acetophenone) compared with a weakly retained peak (resorcinol) using method A for the 2010 student peak area data ? Q2 The titanium content in steel (% w/w) is determined in two laboratories by means of atomic absorption spectrometry resulting in the following results Lab A Lab B (a) Is the data produced by Lab A more precise than 0.470 0.529 the data produced by Lab B at the 95% confidence level 0.448 0.490 (b) Is the precision of the measurements of Lab A 0.463 0.489 and Lab B different at the 95% confidence level 0.449 0.521 (c) Is the accuracy of the two Labs different at the 0.482 0.486 95% confidence level
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This note was uploaded on 02/06/2010 for the course CHEM nfgj taught by Professor Hgsdhjgf during the Spring '10 term at Wayne State University.

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Homework - 3(1) - CHM 7142 Winter 2010 Homework-3 Q1(a Can...

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