Texas Instruments TI-84 Plus Guide Book

Chapter 13: Inferential Statistics and Distributions 357
1-PropZInt
1-PropZInt1-PropZInt
1-PropZInt
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.
2-PropZInt
2-PropZInt2-PropZInt
2-PropZInt
2-PropZInt (two-proportion z confidence interval; item B) computes a confidence interval
for the difference between the proportion of successes in two populations (p
1
Np
2
). It
takes as input the count of successes in each sample (
x
1
and x
2
) and the count of
Input:
Calculated
results:

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-