Stakeholders want to watch the experiment live — how?
Sequential testingHardProblem. A commerce experiment is running, and stakeholders refresh the dashboard daily, ready to call it the moment it looks significant. With a fixed-horizon t-test, what is wrong with that, and how do you design the readout so they can monitor continuously without fooling themselves?
Before you reveal: say your answer out loud, as if you were in the real interview — get your reasoning across clearly first. There is no single correct answer: reading what the interviewer is really after and defending your own thinking is what makes an answer strong.