Your question is Plan Sample Size for In-App Experiment. 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 work on a consumer marketplace app and are planning an A/B test on a new in-app experience. Leadership wants to know whether the experiment is large enough to detect a meaningful change before you launch it.
How do you think about sample size and power when planning this experiment? Walk through how you would define the minimum detectable effect, choose the primary metric and guardrails, and decide whether the test is feasible.