Distributions associated with the Student's T Equation:

dt(x, d) Returns the probability density for value x.
pt(x, d) Returns the cumulative probability distribution
for value x.
qt(p, d) Returns the inverse cumulative probability distribution
for probability p.
rt(m, d) Returns a vector of m
random numbers having the Student's t distribution.
Arguments:
- x is a scalar or vector of real values.
- d is an integer degree of freedom greater
than 0.
- p is a real probability between 0 and 1.
- m is an integer greater than 0.
Notes:
- For definitions of the functions, and information on generating random numbers,
see the Density and Distribution definitions.
- Though the distribution equation is meant to be formulated for integer degrees
of freedom, Mathcad does allow real values.