Toxic waste The Environmental Protection Agency took a map of a region near a former
Chapter 11, Problem 11(choose chapter or problem)
Toxic waste The Environmental Protection Agency took a map of a region near a former industrial waste dump and placed a grid of 552 squares on it. They randomly selected any 16 of those squares from which to collect soil samples and checked each for evidence of toxic chemicals. a) What type of sampling did they use? b) Is there any sort of bias associated with this sampling procedure? c) One researcher suggests that plots closer to the old dump site could contain more contaminants than those farther away. How could the sampling procedure be improved to take this into account?
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