Module 4 DQ 1 and DQ 2 Tutor MUST have a good command of the En

Module 4 DQ 1 and DQ 2 Tutor MUST have a good command of the English language These are two discussion questions DQ1 and DQ2 posts must be at least 150 words and have at least one reference cited for each question. In-text citation, please Tutor MUST have a good command of the English language Sources need to be journal/scholarly articles.  Use only articles that are published between 2015-2018 (except for your theory articles which will be older as you must cite primary sources). No textbook or direct quotes Please separate the two DQ with their reference page My project is CLABSI prevention DQ 1 Describe a vulnerable population in terms of research. Why is the population considered vulnerable? What other groups might also be considered vulnerable populations DQ 2 Assume you want to do a project that compares the survey results before an intervention to those after an intervention in the same sample (the same people will take both surveys). You plan to use a paired t-test to analyze your results. Using the “Determining the Appropriate Sample Size,” Topic Material, perform a sample size calculation to determine how large your sample should be. Justify your sample size calculation with citations. Discuss how your sample size may affect the validity of your study.