HP 39g Graphing Calculator Uživatelská příručka Strana 115

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Inference aplet 9-1
9
Inference aplet
About the Inference aplet
The Inference capabilities include calculation of confidence
intervals and hypothesis tests based on the Normal
Z–distribution or Student’s t–distribution.
Based on the statistics from one or two samples, you can test
hypotheses and find confidence intervals for the following
quantities:
mean
proportion
difference between two means
difference between two proportions
Example data When you first access an input form for an Inference test, by
default the input form contains example data. This example
data is designed to return meaningful results that relate to the
test. It is useful for gaining an understanding of what the test
does, and for demonstrating the test. The calculator’s on–line
help provides a description of what the example data
represents.
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