Suppose that a biologist took water samples at random intervals from a rapidly flowing creek to test for contaminants. A sample was taken at a single location from the center of the creek for one year. Could such a survey be depended on?
A) Yes, because contaminants in the creek would not change from day to day.
B) No, because all the samples were taken from the center of the creek.
C) No, because a sample must be taken every day.
D) Probably.
E) No, because all the samples were taken from a single location.

Question

Quizplus · Accepted Answer

While it would be ideal to take samples more frequently and from multiple locations, taking regular samples from a single location can still provide valuable information about the overall contaminant levels in the creek. The biologist can use statistical methods to analyze the data and draw conclusions about the water quality. However, the reliability of the survey may be influenced by factors such as the timing of the samples and the location where the samples were taken.

Suppose That a Biologist Took Water Samples at Random Intervals