				S2INT

Michael Lloyd (http://www.hsu.edu/faculty/lloydm/ti/prgmtabl.html)
Henderson State University

HISTORY
1.0 May 2001
1.1 August 2015 - Updated file to .8xp

DESCRIPTION
This program finds a confidence interval for the variance and
standard deviation. This command is not a statistical test that 
is built into the TI-83.

It is assumed that the ZZINEWT subroutine has been loaded onto 
the calculator.

PROGRAM LISTING
Disp "INPUT: STATS"
Input "Sx\^2\=",S
Input "n=",N
Input "C-LEVEL=",C
Disp "\sigma\x\^2\ INTERVAL:"
N-1\->\K
"\chi\\^2\pdf(X,K)"\->\Y\0\
2\->\P:.001\->\Q
(1-C)/2\->\C
prgmZZINEWT
T\->\Z
1-C\->\C
prgmZZINEWT
KS/{T,Z}
Pause Ans
Disp "\sigma\x INTERVAL:"
Pause \root\(Ans)
DelVar Y\0\

