HP 39gII

106 Inference app
One-Sample Z-Test
Menu name Z-Test: 1 μ
On the basis of statistics from a single sample, the
One-Sample Z-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:
Inputs The inputs are:
Results The results are:
H
1
:μμ
0
<
H
1
:μμ
0
>
H
1
:μμ
0
≠
Field name Definition
Sample mean.
n Sample size.
μ
0
Hypothetical population mean.
σ Population standard deviation.
α Significance level.
x
Result Description
Test Z Z-test statistic.
Test
Value of associated with the
test Z-value.
P Probability associated with the
Z-Test statistic.
Critical Z Boundary11 value(s) of Z
associated with the α level that
you supplied.
x
x