Your question is Campaign Impact on Customer Behavior. 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 reviewing customer behavior before and after a recent marketing campaign. The team wants to know whether observed changes reflect a real campaign effect or normal variation.
How would you investigate whether a recent campaign changed customer behavior?