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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola
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efer to the indicated data set in Appendix B and use the

Chapter 13, Problem 9 BSC

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QUESTION:

Problem 9BSC

refer to the indicated data set in Appendix B and use the Wilcoxon rank-sum 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 and another 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 lead levels 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 IQ scores?

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QUESTION:

Problem 9BSC

refer to the indicated data set in Appendix B and use the Wilcoxon rank-sum 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 and another 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 lead levels 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 IQ scores?

ANSWER:

Solution 9BSC

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