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Compute the test value. What is the correct decision? 0 Reject the null hypothesis 0 Do not reject null hypothesis Which of the following is correct based on the decision? 0 There is enough evidence to conclude that the workshop can reduce math anxiety. 0 There is not enough evidence to conclude that the workshop can red uoe math anxiety. Seven students were given a pretest to measure math anxiety. They completed a workshop to reduce their anxiety and were given a posttest. At a = 0.05, using Wilcoxon signed-rank test, can one conclude that the workshop reduced their anxiety? The pretest and posttest are shown here. A lower score indicates a lower anxiety level. Pretest 32 39 43 20 29 35 34 Posttest 30 31 42 21 27 29 36 Which of the following statement is true? Wilcoxon signed-rank test can be used in two independent samples. O Wilcoxon signed-rank test is the other name for Mann-Whitney U test. O Wilcoxon signed-rank test is preferred alternative for paired t-test. Wilcoxon signed-rank test is a parametric test. What is the critical value in the given problem? O 1 O 2 O O 4