0.56 ppm is the maximum authorized concentration of phosphate in drinking water. Given below is the analysis of various samples of bottled water from the same batch of production. Is there an outlier present in the data set at 95% confidence interval? What is the t-tab and t-calc for the data set? Can the water be used for drinking? Use outlier tests   Sample Phosphate (ppm) 1 0.26 2 0.46 3 0.41 4 0.49 5 0.38

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