Binomial Sample Size Calculator Confidence Interval

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Binomial Sample Size Calculator Confidence Interval. When the observed completion rate is 100% or 0% there cannot be a two sided confidence interval (since you cannot have more than 100% or less than 0%). Using the normal approximation to solve a binomial distribution problem.

Finally, the confidence interval will be displayed in the new window A binomial table should be used to find the binomial confidence interval for p. Large sample size (> 15) and small p (< 0.1):

Powerful confidence interval calculator online:

Note that this sample size calculation uses the normal approximation to the binomial distribution. Finally, the confidence interval will be displayed in the new window If, the sample proportion is close to 0 or 1 then this approximation is not valid and you need to consider an alternative sample size calculation method. Binomial and continuous outcomes supported.