The Lighthouse Coach

Experimentation & A/B Testing: Prove It Before You Ship It — the free Preview

This page is the real first concept of Experimentation & A/B Testing: Prove It Before You Ship It (Signature Course No. 292) — not a trailer and not a video. You work through Concept 1, “The Testable Hypothesis,” in a Socratic conversation with an AI coach: she asks before she teaches, builds on your own answers, and holds you to a mastery bar before the concept counts as done.

What this course teaches. Design a fair test and read it without fooling yourself: a testable hypothesis, clean randomization, an honest baseline, a sample size that can answer, one deciding metric behind veto guardrails, and a report written at exactly the strength the design earned.

How the Preview works. Meet Sutton, our Head Coach, then request your free Preview key — it arrives by email in a moment. Pick your coach (Sutton, Alex, Caroline, Jack, Catherine, or Marcus), hear each one ask this concept’s first question, and begin. One concept, one five-minute conversation, coached exactly as enrolled learners meet it. When you’re ready for all 18 concepts, the full course is $195.

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