Casio CFX-9970G User Manual page 319

ˆ p
.................... expected p-value 1
1
ˆ p
.................... expected p-value 2
2
n
.................... sample 1 size
1
n
.................... sample 2 size
2
k k k k k t Confidence Interval
You can use the following menu to select from two types of
• {1-S}/{2-S} ... {1-Sample}/{2-Sample}
u u u u u 1-Sample t Interval
t
1-Sample Interval calculates the confidence interval when the mean value of the
sample is known. The
The following is the confidence interval.
)
Left = o– t
n – 1
2
)
Right = o+ t
n – 1
2
Perform the following key operation from the statistical data list.
4(INTR)
t
2(
)
1(1-S)
The following shows the meaning of each item in the case of list data specifica-
tion.
Data ................ data type
C-Level ........... confidence level (0 < C-Level < 1)
List .................. list whose contents you want to use as sample data
Freq ................ sample frequency
Execute .......... execute a calculation
The following shows the meaning of parameter data specification items that are
different from list data specification.
o
..................... sample mean
x
................ sample standard deviation (
%
n
-1
n
..................... sample size (positive integer)
t
Interval
t
Interval is applied to
x
%
n–1
n
x
%
n–1
n
Confidence Interval
t
confidence interval.
t
distribution.
x
> 0)
%
n
-1
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