Your question is Comparing Two Customer Cohorts. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You are comparing two customer cohorts in a product analytics setting, such as customers first acquired through two different onboarding experiences in ACME House. You want to know whether the cohorts behave differently in a way that is statistically meaningful, not just directionally different.
How would you compare two customer cohorts to see whether their behavior is meaningfully different?