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Chapter 8: Statistics & Regression Calculations
2. Enter the appropriate value
3. Press @ h .
15 Zint2prop
Finds the confidence interval of the difference (P
success probability obtained from the two sets of sample data
collected from two different populations.
Example
Find the confidence interval of the success probability (P
confidence level of 0.9 for the two sets of sample data n
16 and n
1. Press S E 1 5.
2. Enter the appropriate value
3. Press @ h .
4. Answers will be displayed
178
into each field.
Answers will be displayed
on the screen, where the
numerical value within ()
indicates the confidence
interval of the success probability at a confidence level of 95%.
* n is a positive integer.
= 20, x
= 5.
2
2
The parameter input screen will appear.
into each field.
on the screen, where the
numerical value within ()
indicates the confidence
interval of the success probability P
90%.
* n
and n
are positive integers.
1
2
-P
) of the
1
2
, P
) at a
1
2
= 50, x
1
-P
at a confidence level of
1
2
=
1
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