Inferential Statistics and Distributions 13-21
8313INFE.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:47 PM Printed: 02/19/01 1:38 PM
Page 21 of 36
2.PropZInt (two-proportion z confidence interval; item B)
computes a confidence interval for the difference between
the proportion of successes in two populations (p1Np2). It
takes as input the count of successes in each sample
(x1 and x2) and the count of observations in each sample
(n1 and n2). The computed confidence interval depends on
the user-specified confidence level.
Input:
,
Calculated results:
2-PropZInt