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Inference aplet 9-13
Results The results are:
One–Sample T–Test
Menu name T–Test: 1 µ
The One–sample T–Test is used when the population standard
deviation is not known. 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 sample mean has some assumed 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:
Result Description
Test P1–P2 Difference between the
proportions of successes in the
two samples.
Test Z Z–Test statistic.
Prob Probability associated with the
Z–Test statistic.
Critical Z Boundary values of Z associated
with the α level that you supplied.
H
1
:µµ
0
<
H
1
:µµ
0
>
H
1
:µµ
0
≠
Field name Definition
Sample mean.
Sx Sample standard deviation.
n Sample size.
µ0 Hypothetical population mean.
α Significance level.
x