Results, Two-sample z-test, Inputs – HP 49g Graphing Calculator User Manual
Page 178
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Results
TestZ
Z-test statistic.
Prob
Probability associated with the Z-test statistic.
Critical Z
Boimdary value of Z associated with the a level that you
supplied.
Critical
X
Bormdary value of .i required by the a value that you
supplied.
Two-Sample Z-Test
Menu name: Z-Test: [xl-ji2
On the basis of two samples, each from a separate population, measures
the strength of the evidence for a selected hypothesis against the null
hypothesis. The null hypothesis is that the mean of population 1 equals the
mean of population 2: H
q
\ pj = P
2
You select one of the following alternative hypotheses against which to
test the null hypothesis:
W,:p, <P2
W2--P, > P
2
P
2
Inputs
X
1
Sample 1 mean.
x2
Sample 2 mean.
al
Population 1 standard deviation.
a2
Population 2 standard deviation.
nl
Sample 1 size.
n2
Sample 2 size.
a
Significance level.
Results
Test Z
Z-test statistic.
Prob
Probability associated with the Z-test statistic.
Critical Z
Boundary value of Z associated with the a level that you
supplied.
Page 9-10
Using statistics