Mathematics, 23.03.2021 19:10, amymelvinlove

The Environmental Protection Agency sets limits on the maximum allowable concentration of certain chemicals in drinking water. For the substance PCB, the limit was been set at 5 ppm (parts per million). The PCB level is unsafe if it is greater than 5 ppm. A random sample of 36 water specimens from the same well results in a mean PCB concentration of 5.2 ppm with standard deviation of 0.6 ppm. Does the data substantiate that the water is unsafe? Write the hypothesis and conclusion, p-value and test statistic.

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The Environmental Protection Agency sets limits on the maximum allowable concentration of certain ch...