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A metallurgical company is analyzing the weight of silver nuggets in a recently discovered silver mine. The company lab weighed 60 nuggets and found that the mean weight of the samples is 11.87 grams with a standard deviation of 0.28. Given the table below that shows the common z-scores. Based on the analysis of these samples, what is the 95% confidence interval of the mean weight of silver nuggets in the mine?
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