Casio FX-9750G PLUS User's Manual & Technical Reference page 310

18 - 6
Tests
The following key operations can be used to draw a graph.
u u u u u 2-Prop Z Test
This test is used to compare the proportion of successes. The 2-Prop
applied to the normal distribution.
Perform the following key operations from the statistical data list.
282
J
cccc
6(DRAW)
x x
–
1
n n
1
Z =
1
p(1 – p )
n
3(TEST)
1(Z)
4(2-P)
p
.................... sample proportion test conditions ("G
1
test, "<
than sample 2, ">
is greater than sample 2.)
x
.................... sample 1 data value (
1
n
.................... sample 1 size (positive integer)
1
x
.................... sample 2 data value (
2
n
.................... sample 2 size (positive integer)
2
Execute .......... executes a calculation or draws a graph
Example To perform a
proportions, data values, and sample sizes
Perform a
x
: sample 1 data value
2
1
x
: sample 2 data value
2
2
n
: sample 1 size
1
1
+
n
: sample 2 size
n
2
1 2
ˆ p
: estimated sample proportion
p
" specifies one-tail test where sample 1 is smaller
2
p
" specifies one-tail test where sample 1
2
x
x
p p
> 2-Prop
1 2
p p
> test using:
1 2
p
" specifies two-tail
2
> 0 integer)
1
> 0 integer)
2
Z
Test for expected sample
x n x
= 225, = 300,
1 1
Z
Test is
n
= 230, = 300.
2 2