Casio fx-9860G AU PLUS, User Manual

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u u
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1-Sample t Test
This test uses the hypothesis test for a single unknown population mean when the popula-
tion standard deviation is unknown. The
1-Sample
t
Test is applied to
t
-distribution.
t =
o –
0
µ
σ
x
n –1
n
o
: mean of sample
µ
0
: assumed population mean
x
σ
n
-1
: sample standard deviation
n
: size of sample
Perform the following key operations from the statistical data list.
3 (TEST)
2
(t)
1
(1-S)
The following shows the meaning of each item in the case of list data specification.
Data ............................ data type
µ
.................................. population mean value test conditions (“ G
µ
0
” specifies two-
tail test, “<
µ
0
” specifies lower one-tail test, “>
µ
0
” specifies
upper one-tail test.)
µ
0
................................. assumed population mean
List .............................. list whose contents you want to use as data (List 1 to 26)
Freq ............................. 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 or draws a graph
The following shows the meaning of parameter data specification items that are different
from list data specification.
o
.................................. mean of sample
x
σ
n
-1
............................. sample standard deviation (
x
σ
n
-1
> 0)
n
.................................. size of sample (positive integer)
After setting all the parameters, use
c
to move the highlighting to “Execute” and then press
one of the function keys shown below to perform the calculation or draw the graph.
•
1
(CALC) ... Performs the calculation.
•
6
(DRAW) ... Draws the graph.
6-5-11
Tests