Concept explainers
To explain can the researcher estimate what proportion of fish in the river have disclosed scales.
Answer to Problem 34E
Yes, the researcher can estimate what proportion of fish in the river have disclosed scales.
Explanation of Solution
It is given in the question that concerned about reports of disclosed scales on fish caught downstream from a newly sited chemical plant, scientist set up a field station in a shoreline public park. For one week they have asked the fishermen there to bring any fish they have caught to field station for a brief inspection. Thus, from this information we can say that whatever conclusions they may be able to make will depend on whether the fish with discolored scales are equally likely to be caught as those without. It also depends on the level of compliance by the fisherman. If fish are not equally likely to be caught or fishermen are more inclined to bring discolored fish, the results will become biased.
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