HP HP-15C Advanced Functions Handbook

Section 4: Using Matrix Operations 123
where
and
i = l "i = l
for some constants Xi and x2.
If the size of the test is a (0 < a < I), you can find x^ and x2 by
solving the system of equations/^(x) = /2(x) = 0, where
= (n - 1) \n(x2/xl) + xl - x2
r
J /2(x)=J (w/2)mexp(-w/2)dw - 2(1 -a)T(m + 1).
•*-!
Here ^2 ^ ^i > 0, a and n are known (n > 1), and m = (n — l)/2 — 1.
An initial guess for (x1,x2) is
and ^ = Xn2__a/2
where xjp is thepth percentile of the chi-square distribution with d
degrees of freedom.
For this example,
F(x) =
Enter the following program:
Keystrokes Display
fflCLEARiPRGMl
[T][DiMl[Bl
Program mode.
000-
001-42,21,11
002- 2
003- 36
004-42,23,13 Dimensions F matrix to
2X2.
005- 1
006-42,23,12 Dimensions f matrix to
2X1.

HP HP-15C Specifications

General

Brand	HP
Model	HP-15C
Category	Calculator
Language	English