# Nctcdf

Nctcdf-func

## Definition:

computes the lower tail probability for the non-central Student's t-distribution.

The lower tail probability of the non-central Student's t-distribution with degrees of freedom and non-centrality parameter , is defined by:

with

## Parameters:

- t (intput,double)
- The deviate from the Student's t-distribution with degrees of freedom, t.

.

- df (intput,double)
- The degrees of freedom of the Student's t-distribution,..
- delta (intput,double)
- The non-centrality parameter of the Student's t-distribution,.
- maxiter (intput,int)
- Optional. Maximum number of iterations, default value is 100.
- prob (output,double)
- The probability.