Current conversion rate is

%

This is the conversion rate of the control treatment. In medical trials, it is the success rate of the placebo

A new treatment needs to increase conversions by

%

Acceptable false conversion rate α is

%

Acceptable false rejection rate β is

%

- The control treatment has a success rate of %
- Worth changing to new treament if its success rate is at least %

we have two possible ways to make an error:

- If both treatments have the same success rate of
**%, we incur the costs of changing for no benfit α% of the time.** - If the alternative treatment has a success rate of %, we reject it and miss out on the benefits β% of the time.

How many trials do you wish to run:

Sample Number | Proportion A | Proportion B |
---|---|---|

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