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Statistical C.I. Question

Posted By: Daniel Murphy
Date: Thursday, 29 January 2015, at 3:21 p.m.

In Response To: Statistical C.I. Question (sita)

A useful site!

For what it's worth, if you're testing for frequency of doublets (which should be 16.67%), the 95% confidence interval for only 36 rolls is ±12.17, for a range of 4.5% to 28.84%. To cut the CI in half, you need to quadruple the number of trials. Thus,

Rolls95% CI
36±12.17%
144±6.09%
576±3.04%
...
4,608±1.08%
...
589,824±0.1%

Keep rolling, often and well.

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