HP Prime Graphing Wireless Calculator - Manual (Page 81)

Inference app 77
Display
results
graphically
17. Display the confidence
interval in Plot view.
P
The 90% confidence
interval is [82.48…,
83.28…].
Hypothesis tests
You use hypothesis tests to test the validity of hypotheses
about the statistical parameters of one or two populations.
The tests are based on statistics of samples of the
populations.
The HP Prime hypothesis tests use the Normal Z-
distribution or the Student’s t-distribution to calculate
probabilities. If you wish to use other distributions, please
use the Home view and the distributions found within the
Probability category of the Math menu.
One-Sample Z-Test
Menu name Z-Test: 1 μ
On the basis of statistics from a single sample, this test
measures the strength of the evidence for a selected
hypothesis against the null hypothesis. The null hypothesis
is that the population mean equals a specified value, Η
0
:
μ = μ
0
.
You select one of the following alternative hypotheses
against which to test the null hypothesis:
H
0
: μ < μ
0
H
0
: μ > μ
0
H
0
: μ ≠ μ
0