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Six measurements were made of the magnesium ion concentration(in parts per million, ppm) in a city's...

Six measurements were made of the magnesium ion concentration(in parts per million, ppm) in a city's municipal water supply, with the following results. It is reasonable to assume that population is approximately normal

189 171 192 244 184 136

Construct a 98% confidence interval for the mean magnesium ion concentration

Math   Statistics-And-Probability   
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