Answer: Appendix B Data Sets. In Exercises 912, refer to the indicated data set in
Chapter 13, Problem 9(choose chapter or problem)
Appendix B Data Sets. In Exercises 912, refer to the indicated data set in Appendix B and use the Wilcoxon ranksum test.. IQ and Lead Exposure Data Set 5 in Appendix B lists full IQ scores for a random sample of subjects with medium lead levels in their blood andanother random sample of subjects with high lead levels in their blood. Use a 0.05 significance level to test the claim that subjects with medium leadlevels have full IQ scores with a higher median than the median full IQ score for subjects with high lead levels. Does lead level appear to affect full IQscores?
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