Is the use of soap and water or alcohol-based rubs more effective in preventing nosocomial infections?

Review the following research questions.
1.Is the use of soap and water or alcohol-based rubs more effective in preventing nosocomial infections?
2.What is the relationship between alcohol and breast cancer?
3.What is the difference in attitudes of male and female college students toward condoms?
Next, select the above 3 questions and address the following:
•Identify an appropriate research design.
•Discuss the strengths and weaknesses of the design.
•Provide a rationale for the design you selected