use the Kruskal - Wallis test with the data set from Appendix B?. IQ and Lead Exposure? Data Set 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 per?formance IQ score. Does lead exposure appear to have an adverse effect? Mile 1 3:15 3:24 3:23 3:22 3:21 Mile 2 3:19 3:22 3:21 3:17 3:19 Mile 3 3:34 3:31 3:29 3:31 3:29

Solution 9BSC Step 1 By using = 0.01 level of significance to test the claim that subjects in those categories have the same median performance IQ score. The Hypotheses can be expressed as H : subjects in those categories have the same median performance IQ score. 0 H1 subjects in those categories have the different median performance IQ score. The test statistic can be found by using MINITAB as shown below From the MINITAB output, we have H = 8.01 is the required value of test statistic and P-value = 0.018. The smaller P-value is, the stronger the evidence against H and in favor of...