189
STATISTICS/ REGRESSION CALCULATIONS
for US
3. Press
Ï
to solve (as shown to the right).
The numerical value within () indicates the confi-
dence bound of µ
1
and µ
2
when the confidence level
is 90%.
* “n1” and “n2” are positive integers.
[14 Zint1prop]
Finds the confidence bound of the success probability of a population from the
success probability obtained from sample data collected from a population.
<Example 14>
Here, we will find the confidence bound of the success probability of contents from
example 10 with confidence level at 0.95.
1. Press
E 1 4 to input each parameter (as
shown to the right).
2. Press
Ï
to solve (as shown to the right).
The numerical value within () indicates the confi-
dence bound of the success probability with
confidence level at 95%.
* “n” is a positive integer.
[15 Zint2prop]
Finds the confidence bound of the difference (P1 - P2) of the success probability
obtained from two sets of sample data collected from two different populations.
<Example 15>
Here, we will find the confidence bound of the success
probability of contents from example 11 with the confi-
dence level at 0.9.
1. Press
E 1 5 to input each parameter (as
shown to the right).
EL-9650-(07)En (178-196) 8/1/00, 9:08 AM189
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