HP 39gs - Manual (Page 125)

Inference aplet 11-1
11
Inference aplet
About the Inference aplet
The Inference capabilities include calculation of
confidence intervals and hypothesis tests based on the
Normal Z-distribution or Student’s t-distribution.
Based on the statistics from one or two samples, you can
test hypotheses and find confidence intervals for the
following quantities:
• mean
• proportion
• difference between two means
• difference between two proportions
Example data When you first access an input form for an Inference test,
by default, the input form contains example data. This
example data is designed to return meaningful results that
relate to the test. It is useful for gaining an understanding
of what the test does, and for demonstrating the test. The
calculator’s on-line help provides a description of what
the example data represents.
Getting started with the Inference aplet
This example describes the Inference aplet’s options and
functionality by stepping you through an example using
the example data for the Z-Test on 1 mean.
Open the
Inference aplet
1. Open the Inference aplet.
Select Inference
.
The Inference aplet
opens in the Symbolic
view.
HP 39gs English.book Page 1 Wednesday, December 7, 2005 11:24 PM