Two analytical methods (potentiometry and amperometry) were used to determine the concentration of Fe²+ in water, and the following data table was obtained: Trial # O 2.365 1.726 O 2.571 1 Potentiometry 0.15 M Amperometry 0.18 M 0.19 M 0.22 M What is the calculated t-value (tcalculated) for the statistical comparison of these two methods? O 1.928 2 3 0.19 M 4 Not Performed 0.25 M 0.18 M

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Two analytical methods (potentiometry and amperometry)
were used to determine the concentration of Fe²+ in water,
and the following data table was obtained:
Trial #
2.365
1.726
2.571
Potentiometry
0.15 M
Amperometry
0.18 M
What is the calculated t-value (tcalculated) for the statistical
comparison of these two methods?
1.928
1
2.447
2
0.19 M
3
0.19 M
0.18 M
4
Not
Performed
0.25 M
0.22 M
Transcribed Image Text:Two analytical methods (potentiometry and amperometry) were used to determine the concentration of Fe²+ in water, and the following data table was obtained: Trial # 2.365 1.726 2.571 Potentiometry 0.15 M Amperometry 0.18 M What is the calculated t-value (tcalculated) for the statistical comparison of these two methods? 1.928 1 2.447 2 0.19 M 3 0.19 M 0.18 M 4 Not Performed 0.25 M 0.22 M
This is the follow-up question of Question 5. Do both
method produce the similar results at the 95% confidence
level?
No, they do not produce the similar results.
Yes, they produce the similar results.
Transcribed Image Text:This is the follow-up question of Question 5. Do both method produce the similar results at the 95% confidence level? No, they do not produce the similar results. Yes, they produce the similar results.
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