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A researcher conducted a study with 43 waterways and near large cities and found the sample mean of pollutants SD is 33.3.They want to test

A researcher conducted a study with 43 waterways and near large cities and found the sample mean of pollutants SD is 33.3.They want to test if this is different than the regional average.At sinificant level alpha=0.25,what is the value for this test.round to 4 decimal

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