Please Answer these questions

Group 1 Group 2 3.4 2.0 3.2 3.0 2.8 3.0 3.7 2.2 2.5 2.1 Question 17 (1 point) The appropriate non-parametric method to use to test for a difference in the time it takes to finish the exam between the two groups is: Wilcoxon signed-rank test. Wilcoxon rank-sum test. Spearman's rho test. OKruskal-Wallis test. Kendall's tau test.Question 20 (2 points) Considering the correct value of the test statistic from Question 19 and a significance level of 0.05, we can conclude that: Q We support the alternative hypothesis. 0 We fail to reject the null hypothesis and conclude that the grades come from the same distribution. 0 Since H= 2.16 Xgn = 5.991, we fail to reject the alternative hypothesis. 0 Since H= 2.16 XE = 5.991, we reject the null hypothesis and conclude the grades do not come from the same distribution. Q We reject the null hypothesis and conclude that at least one group has a different grade distribution from the others. Question 18 {2 points) Which of the following statements is/are true? You can select one or more. C] If the null hypothesis for the Wilcoxon rank-sum test is rejected, the distributions for the two populations are different from one another which should result in the rank-sum of one sample being smaller than the other. C] To compare two populations, parametric tests are procedures that rely on fewer assumptions about the probability distribution for a population of interest than non-parametric tests. [3 The pooled variance is used to calculate the test statistics for comparing two population means when population variances are assumed to be equal. O The Wilcoxon ranksum test statistic equals the sum of the ranks for the sample with the larger sample size. if the sample sizes are equal, either sample can be used to calculate the test statistic. Question 19 (2 points) Now, assume that a Kruskal-Wallis test is being conducted to determine whether or not all groups come from the same distribution. Suppose a new group 3 is added to the analysis denoting the ADM2304 final exam grade in the IT field. What is the correct value of the test statistic? Group 1 Group_2 Group Marketing Finance IT T1=60 T2=36 TS=24 n1=6 n2=5 n3=4