Distribución chi-cuadrado no central

Evalúe y genere muestras aleatorias a partir de una distribución chi-cuadrado no central

Funciones

`ncx2cdf`	Noncentral chi-square cumulative distribution function
`ncx2pdf`	Noncentral chi-square probability density function
`ncx2inv`	Noncentral chi-square inverse cumulative distribution function
`ncx2stat`	Noncentral chi-square mean and variance
`ncx2rnd`	Noncentral chi-square random numbers
`random`	Números aleatorios

Noncentral Chi-Square Distribution
The noncentral chi-square distribution is a more general case of the chi-square distribution, with applications in thermodynamics and signal processing. The literature in these areas may refer to it as the Rician Distribution or generalized Rayleigh Distribution.