WebCab Probability and Statistics Web Services for .NET v3.3 Demo

NormalApproximationOfTheBinomialDistribution.ProbabilityDown Method 

Calculates the probability of 0 or 1 or - or x successes in n trials.

public double ProbabilityDown(
   double a
);

See Also

NormalApproximationOfTheBinomialDistribution Class | ProbabilityDistributions Namespace