61. Solving a chemistry problem
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61. Solving a chemistry problem
3. When determining cadmium in a sample by polarographic and extraction-photometric methods, the following results were obtained (% * 10-3): 1) 1.25; 1.26; 1.28; 2) 1.10;1.25;1.35. Is there a significant difference in the accuracy of the methods used?
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