i want answer for q1,2,3,5

You are working as public health consultant in Ministry of bealth (MOII) and you are eiven a task to identify prevalence of postoperative (surgical) site infections among patients admitted in a central hovpital. Previously publiched researeh from the Kingdom of Saudi Arabia stated that prevalence of surgical site infections was 6.8%. The following is the data colleetion proforma that is approved for your task (researeb) Data cellection proforma: ID of this Data sheet: Part 1: To be collected from all files (Secondary Data) 1. Age (in years): 2. Gender: Male Female 3. Surgical ward type: General Surgery Obstetrics and Gynecology Other surgical types 4. Surgery Category: Elective Emergency 5. Type of Surgery: Open Laparoscopic 6. Pre-operative contamination status: Clean Contaminated 7. Co-morbid conditions: 8. Post- operative (Surgical) site infection status: Present Absent Questions: Q1: Estimate the minimum sample size required for this rescarch? Q2: Select the sampling methods that can be used in this research and briefly discuss about it? Q3: Prepare coding sheets of this data collection proforma for SPSS Q4: Create variables in SPSS for the above data collection proforma under following columns Q5: Specify appropriate statistical tests to be used for any two exposure variable (one qualitative and one quantitative) with the outcome variable