19. Solving a chemistry problem
2. To determine the vitamin phosphorus in canned fish "Pink salmon" by photocolorimetry, the following results were obtained (mg/100 g of product): 228.0 200.4 230.1 232.0 229.8 231.4; 232.0; 228.9;233.4. Calculate the standard deviation of a single result and the confidence interval of the mean.
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