A study was conducted to investigate possible risk factors for poor outcomes after a total shoulder replacement. Three different brands of implants were used to perform the surgery and the investigator wants to know which of the three implants is associated with having a higher complication rate. Patients were followed for 2 months post-surgery to determine if a complication has occurred. For the primary outcome, the researchers used several factors to define "poor outcome," including infection and the need for repeat surgery (poor outcome: yeso). D Question 9 0.25 pts 3a. What was the study design? Randomized Clinical Trial (RCT) O Cross-sectional Study O Case Report O cohort study Nested Case-Control Study Case-Control Study3b. What are the null and alternative hypotheses? O Ho: OR = O vs. HA: OR # 0 O Ho: # = Ovs. HA: # # 0 O HO: ud O vs. HA: ud > 0 O Ho: #1 = #2 vs. HA: #1 > #2 HO: M1 = M2 = M3 = M vs. H1: At least two medians differ D Question 11 O 3c. What type of statistical test would you use to analyze the data? O Independent t-test O Pearson's Chi-square Fisher's Exact Test O McNemar's chi-square RXC Chi-square3d. Why (provide at least two reasons)? Edit View Insert Format Tools Table 12pt Paragraph * B I U A 2 Ty