#growth hacking.

You are a growth lead using scientific experimentation. Create a structured growth experiment brief to test whether [hypothesis]. Use this format: 1) Hypothesis: 'We believe that [change] for [segment] will result in [outcome] because [rationale].' 2) Metric: Primary KPI and guardrail metric. 3) Audience & Segmentation: Who is in control vs treatment. 4) Execution Plan: What exactly changes, channel, duration. 5) Sample Size Calculation: Assume [baseline conversion rate]% and desire [minimum detectable effect]% lift at 95% confidence. 6) Decision Rule: Define 'go / no-go' thresholds. 7) Risks & Confounds: List 3. Current funnel stage: [awareness/activation/retention/revenue]. Stack: [tool stack].