Problem
How would you determine the required sample size for an A/B test when the baseline conversion rate is very low?
Practicing as: Data Scientist interview at WiseHi, I'll play your Wise interviewer for the Data Scientist role. Candidates describe these interviews as often stressful and moderately difficult, so expect me to be direct and to the point. Take your time with the question above and answer like we're in the room.
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