Data Set 5 in Appendix B lists performance IQ scores for a random sample of subjects with low 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 low lead levels have a higher median performance IQ score than those with high lead levels. Does lead exposure appear to have an adverse effect?
Answer to relevant QuestionsData Set 21 in Appendix B lists weights (g) of pre-1964 quarters and post-1964 quarters. Use a 0.05 significance level to test the claim that the samples are from populations with the same median. Does it appear that the ...For the data given in Exercise 1, identify the values of n1, n2, n3, and N. Data Set 9 in Appendix B lists measured cotinine levels from a sample of subjects who smoke, another sample of subjects who do not smoke but are exposed to environmental tobacco smoke, and a third sample of subjects who do ...Use the scatterplot to find the value of the rank correlation coefficient rs and the critical values corresponding to a 0.05 significance level used to test the null hypothesis of ps = 0. Determine whether there is a ...Refer to Data Set 15 in Appendix B and use the departure delay times and the arrival delay times. Use the data from Appendix B to testfor rank correlation with a 0.05 significance level.
Post your question