Hello all:

Any help appreciated. I am running an intervention with students in a esl environment. I want to compare knowledge and awareness of the topics pre and post intervention. The issue is the survey needs to be anonymous. I have no gaurantee that the same students will be taking part in both questionnaires (althought there will be significant overlap). I will not be running a placebo group.

Am I looking at independent t tests, or something different? Can I infer any change is due the intervention if its not a paired t-test?

Again, any help apprecited, if anyone could direct me!

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