Casio ClassPad 300 PLUS User Manual page 371

Z
2-Prop Test
Command: TwoPropZTest
Description: This command compares the proportion of successes for two populations.
A 2-Prop
Z =
Command Syntax
"p
condition",
1
Definition of Terms
p
condition : sample proportion test conditions ("≠" specifies two-tail test, "<"
1
x
:
1
n
:
1
x
:
2
n
:
2
Input Example:
TwoPropZTest ">",15,20,25,30
Calculation Result Output
p p
> : test condition
1 2
z z
: value
p p
: -value
ˆ p
: estimated proportion of sample 1
1
ˆ p
: estimated proportion of sample 2
2
ˆ p
: estimated sample proportion
n
: size of sample 1
1
n
: size of sample 2
2
7-9-5
Tests
Z
Test is used for normal distribution.
x x
1 2
–
n n
1 2
1 1
p(1 – p )
+
n n
1 2
x n x
value, value,
1 1
specifies one-tail test where sample 1 is smaller than sample 2, ">"
specifies one-tail test where sample 1 is greater than sample 2.)
x
data value (integer,
size of sample 1 (positive integer)
x
data value (integer,
size of sample 2 (positive integer)
20050501
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
n
value, value
2 2
> 0) of sample 1
1
> 0) of sample 2
2