HP 39g Graphing Calculator - Manual (Page 118)

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
Open the Inference aplet.
APLET
Select Inferential
Hfdi'i
The Inference aplet opens
in the Symbolic view.
INF STKT SVMBDLIC UIEWM
METHOD:
TYPE: Z-Test:
1 n
ftLT H¥P0TH:
Chc>05« iin inF«r«ritiflii. Hcthod
Inference aplet’s SYMB view keys
The table below summarizes the options available in
Symbolic view.
Hypothesis Tests Confidence Intervals
Z: 1 p, the Z-Test
on
1
mean
Z-Int: 1 p, the confidence
interval for
1
mean, based on the
Normal distribution
Z: Pi - P
2
, the
Z-Test on the
difference of two
means
Z-Int: Pi - P
2
, the confidence
interval for the difference of two
means, based on the Normal
distribution
Z: 1 P, the Z-Test
on
1
proportion
Z-Int: 1 P, the confidence
interval for
1
proportion, based
on the Normal distribution
Z : P , - P
2
, the
Z-Test on the
difference in two
proportions
Z-Int: P] - P
2
, the confidence
interval for the difference of two
proportions, based on the Normal
distribution
T: 1 p, the T-Test
on
1
mean
T-Int: 1 p, the confidence
interval for
1
mean, based on the
Student’s t-distribution
T: Pi-P
2
, t h e
T-Test on the
difference of two
means
T-Int: Pi - P
2
, the confidence
interval for the difference of two
means, based on the Student’s
t-distribution
9-2 Inference aplet