The chi-square distribution, The chi-square distribution ,17-11 – HP 50g Graphing Calculator User Manual
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Page 17-11
where
Γ(α) = (α-1)! is the GAMMA function defined in Chapter 3.
The calculator provides for values of the upper-tail (cumulative) distribution
function for the t-distribution, function UTPT, given the parameter
ν and the value
of t, i.e., UTPT(
ν,t). The definition of this function is, therefore,
For example, UTPT(5,2.5) = 2.7245…E-2. Other probability calculations for the
t-distribution can be defined using the function UTPT, as follows: