# Binomial Confidence Intervals

This tool calculates one-sided and two-sided confidence intervals for discrete reliability test data (i.e., go/no-go testing). Given a risk (α), confidence is calculated at the 1-α level for the true proportion defective p, where N_{d} defects are found
in a sample size of N. For additional details, click here.

The tool is prefilled with example data from the
NIST Engineering Statistics Handbook. See the example shown at the bottom of this page.

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Calculation Inputs: