How long to test

Model 08

Estimate

Baseline conversion is 10 percent. Detect a 1 percent relative lift, to 10.1 percent, at 95 percent confidence (z = 1.96) and 80 percent power (z = 0.84). 100,000 new independent users/day split equally between 2 arms. How many whole days must the test run?

0.0010.010.11101001,00010K

Type a number or drag the scale. Each mark is 10 times the mark before it.

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