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Confidence Intervals - HP 48gII User Manual

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Press @@@OK@@@ to obtain the following results:

Confidence intervals

The application 6. Conf Interval can be accessed by using ‚Ù—
@@@OK@@@. The application offers the following options:
These options are to be interpreted as follows:
1. Z-INT: 1 .: Single sample confidence interval for the population mean, ,
with known population variance, or for large samples with unknown
population variance.
2. Z-INT:
.: Confidence interval for the difference of the population
means,
-
, with either known population variances, or for large
1
2
samples with unknown population variances.
3. Z-INT: 1 p.: Single sample confidence interval for the proportion, p, for
large samples with unknown population variance.
4. Z-INT: p
p .: Confidence interval for the difference of two proportions,
p
-p
, for large samples with unknown population variances.
1
2
Page 16-7

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