Casio CFX-9970G User Manual page 301

The following key operation can be used to draw a graph.
J
cccc
6(DRAW)
u u u u u 2-Prop Z Test
This test is used to compare the proportions of two samples that satisfy certain
criteria. It tests the hypothesis that the size and the number of data of two samples
that satisfy the criteria are as specified. The 2-Prop
normal distribution.
x
1
–
n
1
Z =
p(1 – p )
Perform the following key operation from the statistical data list.
3(TEST)
1(Z)
4(2-P)
p
.................... sample proportion test conditions ("G
1
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
x
2 1
n
x
2
2
n
1 1 1
+
n
n n
2
1 2
ˆ p
p
test, "< " specifies one-tail test where sample 1 is less than
2
p
sample 2, "> " specifies upper one-tail test where sample 1
2
is greater than sample 2.)
p p
> 2-Prop
1 2
p p
> test using:
1 2
Z
Test is applied to standard
: sample 1 data value
: sample 2 data value
: sample 1 size
: sample 2 size
: estimated sample proportion
p
" specifies two-tail
2
x
> 0 integer)
1
x
> 0 integer)
2
Z
Test for expected sample
x n
= 225, = 300,
1 1
18 - 6
Tests
x n
= 230, = 300.
2 2
281