Title: A Wilcoxon rank sum test for comparing two populations involves two independent samples of sizes 15 ... Post by: Beezus on Mar 3, 2018 A Wilcoxon rank sum test for comparing two populations involves two independent samples of sizes 15 and 20 . If the value of un-standardized test statistic is T = 225, then the value of the standardized test statistic is z = -1.50.
Indicate whether the statement is true or false Q. 2 In a Wilcoxon rank sum test for independent samples, the two sample sizes are 4 and 6, and the value of the Wilcoxon test statistic is T = 25 . If the test is a two-tail and the level of significance is 0.05, then the null hypothesis will be rejected. Indicate whether the statement is true or false Q. 3 A Wilcoxon rank sum test for comparing two independent samples involves two samples of sizes 6 and 9 . The alternative hypothesis is that the location of population 1 is to the left of the location of population 2 . Using a 0.05 significance level, the appropriate critical values are 31 and 65. Indicate whether the statement is true or false Q. 4 Nonparametric procedures are often, and perhaps more accurately, called free-agent statistics. Indicate whether the statement is true or false Q. 5 A nonparametric test is one that makes no assumptions about the specific shape of the population from which a sample is drawn. Indicate whether the statement is true or false Q. 6 Nonparametric tests are methods of inference that make no assumptions whatsoever about the nature of underlying population distributions or their parameters. Indicate whether the statement is true or false Q. 7 A parametric test is a hypothesis test that depends on certain specific assumptions about the probability distribution of population values or the sizes of population parameters. Indicate whether the statement is true or false Q. 8 Nonparametric tests are often more efficient than parametric tests. Indicate whether the statement is true or false Title: A Wilcoxon rank sum test for comparing two populations involves two independent samples of sizes 15 ... Post by: Pita on Mar 3, 2018 Content hidden
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