Casio SERIES FX-9860G User Manual
Page 321
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u 2-Prop Z Test
This test is used to compare the proportion of successes. The 2-Prop
Z
Test is applied to
the normal distribution.
x
1
: data value of sample 1
x
2
: data value of sample 2
n
1
: size of sample 1
n
2
: size of sample 2
ˆ
p : estimated sample proportion
Perform the following key operation from the statistical data list.
3(TEST)
1(Z)
4(2-P)
p
1
................................. sample proportion test conditions (“
G
p
2
” specifi es two-tail
test, “<
p
2
” specifi es one-tail test where sample 1 is smaller
than sample 2, “>
p
2
” specifi es one-tail test where sample 1
is greater than sample 2.)
x
1
................................. data value (
x
1
> 0 integer) of sample 1
n
1
................................. size (positive integer) of sample 1
x
2
................................. data value (
x
2
> 0 integer) of sample 2
n
2
................................. size (positive integer) of sample 2
Save Res ...................... list for storage of calculation results (None or List 1 to 26)
Execute ........................ executes a calculation or draws a graph
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.
Z
=
n
1
x
1
n
2
x
2
–
p
(1 – p )
n
1
1
n
2
1
+
Z
=
n
1
x
1
n
2
x
2
–
p
(1 – p )
n
1
1
n
2
1
+
6-5-8
Tests