I have the rate of vaccination in my county for a six week period before an intervention took place and want to compare it to a six week period after the intervention took place. I am looking to determine if there was a significant increase in the vaccination rate due to the intervention. I thought this would be a paired sample t test since we are measuring the same population before and after an intervention but my professor is saying it has to be an independent t test because I am not measuring the same people twice. When I look this up, it says the independent t test is done when you have a control group and a treatment group. That is not what I have and I am confused. How do you think this should be set up?