Using Stata for Confidence Intervals All of the confidence interval problems we have discussed so far can be solved in Stata via either (a) statistical calculator
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Exact Binomial and Poisson Confidence Intervals Revised 05/25/2009 -- Excel Add-in Now Available! (read below) Binomial || Poisson || Set Conf Levels
The macro named CIPROP.SPS, which is provided on the SPSS Technical Support website, enables users to compute the 95% confidence interval for a proportion calculated

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Using Stata for Confidence Intervals - University of Notre Dame

IBM Confidence intervals for small sample. IBM Confidence intervals for small sample.
The 95% confidence intervals calculated using the Wald method are based on a t-statistic for the number of degrees of freedom in the entire NHANES sample.

Confidence interval - Wikipedia, the free.
Confidence Interval Binomial Distribution

JavaStat -- Binomial and Poisson.

In statistics, a confidence interval (CI) is a type of interval estimate of a population parameter and is used to indicate the reliability of an estimate. It is an
Continuous NHANES Web Tutorial: Variance.
Clopper-Pearson Exact Ci Formula

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Confidence Intervals I. Interval estimation. The particular value chosen as most likely for a population parameter is called the point estimate.

sas clopper pearson confidence intervals

Confidence Intervals I. Interval estimation.
Displayed Output for Classical Analysis.