_________ Sources of Water Pollution Are Relatively Easy to Monitor

question 19

Multiple Choice

_________ sources of water pollution are relatively easy to monitor and regulate, while _____________ sources of water pollution are difficult to monitor and clean up.

• A) Domestic; industrial
• B) Primary; tertiary pollutant
• C) Nonpoint; point
• D) Tertiary pollutant; primary
• E) Point; nonpoint

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Definitions:

Z-test

A statistical test used to determine whether there is a significant difference between the mean of a sample and the mean of a population, or between the means of two samples, assuming a normal distribution.

T-test

A statistical test used to compare the means of two groups or samples to see if they are significantly different from each other.

Population Variances

A measure of the spread of a population's data points from its mean.

Test Statistic

A value derived from sample data, used in statistical hypothesis testing to determine whether to reject the null hypothesis.