Wouldn't that be half of 999 in 1,000 — assuming that 50% are shown v1 and 50% v2 ? That doesn't change your advice. Once you've reached a certain confidence, i

Wouldn't that be half of 999 in 1,000 — assuming that 50% are shown v1 and 50% v2 ? That doesn't change your advice. Once you've reached a certain confidence, it's time to make the change.