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Scientists from a state that has extensive agriculture want to sample the pollutants in areas with buffer strips and compare them to areas without buffer strips. Which sampling strategy would be most appropriate for the scientists to use when measuring pollutant levels in this scenario?

A.
1. Select locations every 100 kilometers along a single stream.
2. Record whether each location is near agricultural areas.
3. Record which agricultural areas have buffer zones.
4. Record which agricultural areas have no buffer zones.
5. Measure pollutants at each location.

B.
1. Identify all streams in the state.
2. Measure pollutants upstream of each agricultural area.
3. Measure pollutants downstream of each agricultural area.
4. Record data separately for the areas with buffer zones and those without.

C.
1. Select 10 streams with buffer zones.
2. Select one stream without a buffer zone.
3. Measure pollutants at the source of each stream.
4. Measure pollutants at the mouth of each stream.

D.
1. Select streams of similar sizes throughout the state.
2. Select 75 locations along the streams.
3. Include locations upstream and downstream of agricultural areas.
4. Include locations with and without buffer strips.
5. Measure pollutants at each location, recording the acreage of each agricultural area.

Sagot :

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Final answer:

The systematic-judgmental sampling plan is the most appropriate for measuring pollutant levels in areas with and without buffer strips in agricultural settings.


Explanation:

Systematic-judgmental sampling plan is appropriate for measuring pollutant levels in areas with and without buffer strips. This method involves selecting specific locations based on judgment and a systematic approach to ensure data accuracy and relevance.

For example, scientists can measure pollutants upstream and downstream of each agricultural area, select streams with buffer zones and one without, and measure pollutants both at the source and mouth of each stream to compare the pollutant levels in areas with and without buffer strips.

By combining judgmental selection with systematic measurements, the scientists can gather detailed and comprehensive data to draw meaningful conclusions about pollutant levels and the effectiveness of buffer strips in agricultural areas. This approach minimizes sampling uncertainty while providing valuable insights.


Learn more about Pollutant sampling in agricultural areas

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