HP 49g+ - Manual (Page 157)

Page 15-4
UTPT, given the parameter ν and the value of t, i.e., UTPT( ν ,t) = P(T>t) = 1-
P(T<t). For example, UTPT(5,2.5) = 2.7245…E-2.
The Chi-square distribution
The Chi-square ( χ 2 ) distribution has one parameter ν , known as the degrees of
freedom. The calculator provides for values of the upper-tail (cumulative)
distribution function for the
χ 2 -distribution using [UTPC] given the value of x
and the parameter ν . The definition of this function is, therefore, UTPC( ν ,x) =
P(X>x) = 1 - P(X<x). For example, UTPC(5, 2.5) = 0.776495…
The F distribution
The F distribution has two parameters ν N = numerator degrees of freedom,
and ν D = denominator degrees of freedom. The calculator provides for
values of the upper-tail (cumulative) distribution function for the F distribution,
function UTPF, given the parameters
ν N and ν D, and the value of F. The
definition of this function is, therefore, UTPF( ν N, ν D,F) = P( ℑ >F) = 1 - P( ℑ <F).
For example, to calculate UTPF(10,5, 2.5) = 0.1618347…
Reference
For additional probability distributions and probability applications, refer to
Chapter 17 in the calculator’s User’s Guide.