278
Perform the following key operation from the statistical result screen.
J
(To data input screen)
cccccc
(To Execute line)
6
(DRAW)
u
u
u
u
u
2-Sample
Z
Test
This test is used when the sample standard deviations for two populations are
known to test the hypothesis that the population means of the two populations are
equal. The
2-Sample
Z
Test
is applied to standard normal distribution.
Z
=
o
1
–
o
2
%
n
1
1
2
%
n
2
2
2
+
o
1
: sample 1 mean
o
2
: sample 2 mean
%
1
: population standard deviation of sample 1
%
2
: population standard deviation of sample 2
n
1
: sample 1 size
n
2
: sample 2 size
Perform the following key operation from the statistical data list.
3
(TEST)
1
(Z)
2
(2-S)
The following shows the meaning of each item in the case of list data specification.
Data ................ data type
µ
1
.................... population mean value test conditions (“
G
µ
2
” specifies two-
tail test, “<
µ
2
” specifies one-tail test where sample 1 is
smaller than sample 2, “>
µ
2
” specifies one-tail test where
sample 1 is greater than sample 2.)
%
1
.................... population standard deviation of sample 1 (
%
1
> 0)
%
2
.................... population standard deviation of sample 2 (
%
2
> 0)
List1 ................ list whose contents you want to use as sample 1 data
List2 ................ list whose contents you want to use as sample 2 data
Freq1 .............. frequency of sample 1 (positive integer)
Freq2 .............. frequency of sample 2 (positive integer)
Execute .......... executes a calculation or draws a graph
18 - 6
Tests
Summary of Contents for CFX-9970G
Page 22: ... CFX 9970G ...
Page 452: ...435 1 2 3 4 5 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 453: ...436 Program for Circle and Tangents No 4 Step Key Operation Display 6 7 8 9 10 ...
Page 454: ...437 11 12 13 14 15 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 455: ...438 16 17 18 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 458: ...441 1 2 3 4 5 Program for Rotating a Figure No 5 Step Key Operation Display ...