T Interval; 1 Sample T Interval - Casio fx-9860G Series User Manual

Left ............................... confi dence interval lower limit (left edge)
Right ............................. confi dence interval upper limit (right edge)
ˆ p
................................. estimated sample propotion for sample 1
1
ˆ p
................................. estimated sample propotion for sample 2
2
n
................................. size of sample 1
1
n
................................. size of sample 2
2
k t Interval
t
1-Sample Interval
t
1-Sample Interval calculates the confi dence interval for an unknown population mean
when the population standard deviation is unknown.
The following is the confi dence interval.
% is the confi dence level.
Left = – t Left = – t
Right = +t Right = +t
Perform the following key operations from the statistical data list.
4(INTR)
2(t)
1(1-S)
The following shows the meaning of each item in the case of list data specifi cation.
Data ............................. data type
C-Level ........................ confi dence level (0 < C-Level < 1)
List ............................... list whose contents you want to use as sample data
Freq ............................. sample frequency (1 or List 1 to 26)
Save Res ..................... list for storage of calculation results (None or List 1 to 26)
Execute ....................... executes a calculation
The following shows the meaning of parameter data specifi cation items that are different
from list data specifi cation.
6-6-8
Confi dence Interval
α
is the level of signifi cance. The value 100 (1 –
σ σ
α α
x x
n–1 n–1
n – 1 n – 1
2 2 n n
σ σ
α α
x x
n–1 n–1
n – 1 n – 1
n n
2 2
(List 1 to 26)
20070201
α
)