125. Задачка по химии №012 591

When determining the content of tellurium in four parallel samples of waste water by the spectrophotometric method in the form of an iodide complex, the following results were obtained: 6.0; 10.0; 7.0; 9.0 µg/dm3. Calculate the limits of the confidence interval of the average value of the tellurium content and the relative error of determination

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