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Unformatted text preview: art number 3 again using the confidence interval from part b to do the hypothesis test. (The result should be the same.) Annual Drinking Water Quality Report, 2004, Town of Brookston, IN “I’m pleased to report that our drinking water is safe and meets federal and state requirements.” Test Results (MCL is the maximum contaminant level, the highest level of a contaminant that is allowed in drinking water.) Contaminant Violation Y/N Level Detected Unit measurement MCL Beta/photon emitters N 2.1 3.2 mrem/yr 4 Alpha emitters N 0 1.6 pCi/l 15 Barium N 0.216 ppm 2 Copper N 0.039 to 0.453 ppm 1.3 F...
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