Confidence Interval - HP NW280-200X User Manual

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The table below summarizes the options available in
Symbolic view for the two inference methods: hypothesis
test and confidence interval.
Hypothesis Test
Z-Test: 1 , the Z-
Test on one mean
Z-Test:  –  , the
1 2
Z-Test on the
difference between
two means
Z-Test: 1 , the Z-
Test on one
proportion
Z-Test:  –  , the
1 2
Z-Test on the
difference between
two proportions
T-Test: 1 , the T-
Test on one mean
T-Test:  –  , the
1 2
T-Test on the
difference between
two means
If you choose one of the hypothesis tests, you can choose
an alternative hypothesis to test against the null
hypothesis. For each test, there are three possible choices
for an alternative hypothesis based on a quantitative
comparison of two quantities. The null hypothesis is
always that the two quantities are equal. Thus, the
alternative hypotheses cover the various cases for the two
quantities being unequal: <, >, and .

Confidence Interval

Z-Int: 1 , the confidence
interval for one mean, based
on the Normal distribution
Z-Int:  –  , the confidence
1 2
interval for the difference
between two means, based on
the Normal distribution
Z-Int: 1 , the confidence
interval for one proportion,
based on the Normal
distribution
Z-Int:  –  , the confidence
1 2
interval for the difference
between two proportions,
based on the Normal
distribution
T-Int: 1 , the confidence
interval for one mean, based
on the Student's t-distribution
T-Int:  –  , the confidence
1 2
interval for the difference
between two means, based on
the Student's t-distribution
Inference app