Exam (elaborations)
Math 221c TOP Exam Questions and CORRECT Answers
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The City of Rexburg reports that the nitrate concentration in the city's drinking water supply is between 1.59 and 2.52 ppm (parts per million,) and values outside of this range are unusual. We will assume μ−2σ=1.59 ppm and μ+2σ=2.52 ppm. It is reasonable to assume the measured nitrate ...
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