Mail - Be Question 24 4 pts A DNP student tested the effectiveness of mindful meditation exercises in nursing staff members on perceived stress using an established tool with reliability and validity, the PSS 10 scale. The compute function in SPSS was used to summarize the PSS resulting in a total score (PSSTotal) that could range from a low of O (no stress) and a high score of 40 (high stress). Choose all that apply:PSSTotal is continuous data measured at the nominal level " Dependent variable is PSSTotal To test the difference in the means between the pre and the posttest the student needs to use an inferential testDescriptive data can show the mean score of the pre and the post groups, but only an inferential test can determine statistical significanceQuestion 25 4 pts A DNP student tested the impact of a change in workflow in the emergency department on time in minutes to secure an EKG result before and after the workflow change. There were 104 observations in the sample in each the pre and the post groups, but the data were not normally distributed. Preintervention, the mean time in minutes was 43.6 minutes. After the workflow change, the mean time was 13.9. Interpret the following SPSS output. Independent-Samples Mann-Whitney U Test Summary Total N 211 Mann-Whitney U 3414,500 Wilcoxon W 9085.500 Test Statistic 3414.500 Standard Error 443.198 Standardized Test Statistic -4.852 Asymptotic Sig (2-sided test) .001 Was there a statistically significant improvement? From the choices below, choose all that apply Yes, the Mann Whitney U generates a standardized test statistic, a a score and the p value is well below 05 at $ 001 [ No because the student used the wrong test and should have used the Independent samples t test No because the Bonferroni correction was not used Yes, the non parametric Mann Whitney U test is the correct inferential test