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Water samples from eight different locations in a lake were taken for examining the percentage of...
Water samples from eight different locations in a lake were taken for examining the percentage of contaminants. The following were the results of the tests. 26.8 32.5 29.7 24.6 31.5 39.8 26.5 19.9 Using the sample mean of the percentage contaminants, what can the engineer assert with 95% confidence for the interval estimate of the true mean of the contaminants percentage?
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