As part of an analytical Chemistry laboratory course, a student measured the Cat content in two walcr samples, city- sup

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As Part Of An Analytical Chemistry Laboratory Course A Student Measured The Cat Content In Two Walcr Samples City Sup 1 (46.04 KiB) Viewed 122 times

As part of an analytical Chemistry laboratory course, a student measured the Cat content in two walcr samples, city- supplied drinking water and well-supplied drinking water, using two different analytical methods, flame alomic absorption spectrometry (FAAS) and EDTA complexometric titration. The results of this experiment are given in the table as the mean Cat concentration (x) and standard deviation (s) in parts per million (ppm). Each sample was measured five times (n = 5) by cach method. City Supplied Drinking Water Well Supplied Drinking Water Method its) Its) FAAS SN.23 +0.53 ppm 65.26 +0.54 ppm EDTA 58.98 +1.0 ppm 66.11 1.0 ppm titration Method Comparison: For cach drinking water sample (city and well), compare the Cat content measured by FAAS and EDYTA titration. Calculate the value for each sample. City: cale = Well: Icale = Do the methods produce statistically different results at the 95% confidence level when measuring the Ca?+ content of the city-supplied drinking water? A list of Student's í values can be found in the Student's 1 table. yes no Do the methods produce statistically different results at the 95% confidence level when measuring the C??? content of the well-supplied drinking water? A list of Student's i values can be found in the Student's flable. yes no Sample Comparison: For cach method (FAAS and EDTA Litration), compare the Cat content measured in the city supplied and well-supplied drinking water samples. Calculate the value for each method. FAAS: lak = EDTA: cale =