Exposure to certain chemicals --> allergic reactions in some children.
Nurses report that the proportion of schoolchildren sent to them for treatment has increased significantly over the past ten years.
Conclusion: Either Renston’s schoolchildren have been exposed to greater quantities of the chemicals, or they are more sensitive to them than schoolchildren were ten years ago.
Possible Assumptions:
1. The grounds on which the school children were diagnosed remains the same.
2. School
...
Nurses report that the proportion of schoolchildren sent to them for treatment has increased significantly over the past ten years.
Conclusion: Either Renston’s schoolchildren have been exposed to greater quantities of the chemicals, or they are more sensitive to them than schoolchildren were ten years ago.
Possible Assumptions:
1. The grounds on which the school children were diagnosed remains the same.
2. School
...



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