119. Solving a chemistry problem
1. In samples from seven fish caught in the Miass River, mercury was determined by the atomic absorption method. The results are shown below. Calculate the mean mercury content and the confidence interval with a confidence level of 0.90 and 0.95. (Hg, n*10-4%: 1.673; 1.015; 3.240; 2.018; 0.570; 2.482; 1.130).
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