an AUDIO tutorial is available for this problem. Species of arsenic found in drinking water include Aso33- (arsenite), AsO43- (arsenate), (CH3)2ASO2" (dimethylarsinate), and CH3)ASO32- (methylarsonate). Pure water containing no arsenic was spiked with 0.40 µg arsenate/L. Seven replicate determinations gave 0.37, 0.38, 0.35, 0.39, 0.39, 0.35, nd 0.38 ug/L. (a) Find the mean. 4.0 pg/L Find the standard deviation. 4.0 ug/L Find the mean percent recovery of the spike. 4.0 % (b) Find the concentration detection limit. 4.0 ug/L
an AUDIO tutorial is available for this problem. Species of arsenic found in drinking water include Aso33- (arsenite), AsO43- (arsenate), (CH3)2ASO2" (dimethylarsinate), and CH3)ASO32- (methylarsonate). Pure water containing no arsenic was spiked with 0.40 µg arsenate/L. Seven replicate determinations gave 0.37, 0.38, 0.35, 0.39, 0.39, 0.35, nd 0.38 ug/L. (a) Find the mean. 4.0 pg/L Find the standard deviation. 4.0 ug/L Find the mean percent recovery of the spike. 4.0 % (b) Find the concentration detection limit. 4.0 ug/L
Chapter3: Statistical Tests With Excel
Section: Chapter Questions
Problem 6P
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