Question

Data Set 5 in Appendix B lists performance IQ scores for random samples of subjects with blood lead levels categorized as low, medium, and high. Use a 0.01 significance level to test the claim that subjects in those categories have the same median performance IQ score. Does lead exposure appear to have an adverse effect? Use the Kruskal-Wallis test with the data set from Appendix B.


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  • CreatedMay 03, 2015
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