Question: Refer to Data Set 11 in Appendix B for the
Refer to Data Set 11 in Appendix B for the ages of actresses at the time that they won Oscars in the category of Best Actress. Use a 0.05 significance level to test the claim that the median age of Oscar-winning actresses is equal to 30 years. Use the Wilcoxon signed-ranks test for the claim about the median of a population.
Relevant Questionsa. If we have sample paired data with 75 nonzero differences, what are the smallest and largest possible values of T? b. If we have sample paired data with 75 nonzero differences, what is the expected value of T if the ...The sample data below are changes in LDL cholesterol levels in clinical trials of Lipitor (atorvastatin). It was claimed that Lipitor had an effect on LDL cholesterol. Negative values represent decreases in LDL cholesterol. ...Assume that we have two treatments (A and B) that produce quantitative results, and we have only two observations for treatment A and two observations for treatment B. We cannot use the test statistic given in this section ...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 ...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 ...
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