Both a gravimetric and a spectrophotometric method are underconsideration for
Chapter 15, Problem 5(choose chapter or problem)
Both a gravimetric and a spectrophotometric method are underconsideration for determining phosphate content of a particularmaterial. Twelve samples of the material are obtained, eachis split in half, and a determination is made on each half usingone of the two methods, resulting in the following data:Use the Wilcoxon test to decide whether one technique giveson average a different value than the other technique for thistype of material.
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