medium10 pts · first answer countsab-testingstatistics

What 95% significance means

An A/B test result is 'significant at the 95% level'. What does that mean?

A.If there were really no difference, a result this large would happen less than 5% of the time by chanceB.There is a 95% chance version B is betterC.95% of users preferred version BD.The lift will be 95% when rolled out

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