Casio CFX9850GBPLUS User Manual page 318

u 2-Prop Z Test
This test is used to compare the proportion of successes. The 2-Prop
the normal distribution.
Z = Z =
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
................................. data value (
1
n
................................. size (positive integer) of sample 1
1
x
................................. data value (
2
n
................................. size (positive integer) of sample 2
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.
6-5-8
Tests
x x x x
1 1 2 2
– –
n n n n
1 1 2 2
1 1 1 1
p(1 – p ) p(1 – p )
+ +
n n n n
1 1 2 2
p
test, "< " specifi es one-tail test where sample 1 is smaller
2
than sample 2, ">
is greater than sample 2.)
x
1
x
2
20070201
x
: data value of sample 1
1
x
: data value of sample 2
2
n
: size of sample 1
1
n
: size of sample 2
2
ˆ
p : estimated sample proportion
p
" specifi es one-tail test where sample 1
2
> 0 integer) of sample 1
> 0 integer) of sample 2
Z
Test is applied to
p
" specifi es two-tail
2