HP 39gs User Manual page 130

Open Inference
aplet
Select inference
method and
type
Set up the
interval
calculation
11-6
6. Open the Inference aplet and clear current settings.
Select
Inference
7. Select an inference method.
Select CONF INTERVAL
8. Select a distribution statistic type.
Select T-Int: 1 μ
9. Set up the interval calculation. Note: The default
values are derived from sample data from the on-line
help example.
Setup-NUM
Inference aplet