13-20 Inferential Statistics and Distributions
8313INFE.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:47 PM Printed: 02/19/01 1:38 PM
Page 20 of 36
1.PropZInt (one-proportion z confidence interval; item A)
computes a confidence interval for an unknown proportion
of successes. It takes as input the count of successes in the
sample x and the count of observations in the sample n.
The computed confidence interval depends on the user-
specified confidence level.
Input:
,
Calculated results:
)1-PropZInt