The mass percent of KHP in an unknown salt sample was determined using both volumetric and...

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The mass percent of KHP in an unknown salt sample was determined using both volumetric and gravimetric titration. Ten determinations using each method were performed: Volumetric (% KHP): 34.22 33.86 34.07 34.49 34.69 33.71 34.28 34.11 34.26 34.10 34.18 34.32 34.11 34.33 34.17 34.12 Gravimetric (% KHP): 34.35 34.26 34.10 34.19 a) Do the two methods give similar standard deviations? b) Do the two methods give similar results for the mass percent of KHP at the 95% confidence level? c) What is the probability that the difference in the two data sets arises from random error? The mass percent of KHP in an unknown salt sample was determined using both volumetric and gravimetric titration. Ten determinations using each method were performed: Volumetric (% KHP): 34.22 33.86 34.07 34.49 34.69 33.71 34.28 34.11 34.26 34.10 34.18 34.32 34.11 34.33 34.17 34.12 Gravimetric (% KHP): 34.35 34.26 34.10 34.19 a) Do the two methods give similar standard deviations? b) Do the two methods give similar results for the mass percent of KHP at the 95% confidence level? c) What is the probability that the difference in the two data sets arises from random error?