Casio ClassPad 300 User Manual

20021201
2-Prop Z Interval
Command: TwoPropZInt 䡺
Description: This command obtains the confidence interval of the difference between the
proportions of successes of two populations.
The confidence interval is obtained using the following expressions.
The confidence level is 100 (1 – α )%.
Left = – – Z
α
2
x
1
n
1
x
2
n
2
n
1
n
1
x
1
1–
n
1
x
1
+
n
2
n
2
x
2
1–
n
2
x
2
Right = – + Z
α
2
x
1
n
1
x
2
n
2
n
1
n
1
x
1
1–
n
1
x
1
+
n
2
n
2
x
2
1–
n
2
x
2
n1, n2 : sample size
x1, x2 : data
Command Syntax
C-Level value, x1 value, n1 value, x2 value, n2 value
Definition of Terms
C-Level: confidence level (0 < C-Level < 1)
x1 : data value (integer, x1 > 0) of sample 1
n1 : size of sample 1 (positive integer)
x2 : data value (integer, x2 > 0) of sample 2
n2 : size of sample 2 (positive integer)
Input Example:
TwoPropZInt 0.95,132,200,90,150
Calculation Result Output
Left : interval lower limit (left edge)
Right : interval upper limit (right edge)
ˆp 1 : estimated proportion of sample 1
ˆp 2 : estimated proportion of sample 2
n1 : size of sample 1
n2 : size of sample 2
7-10-5
Confidence Intervals

Casio ClassPad 300 Specifications

General

Brand	Casio
Model	ClassPad 300
Category	Calculator
Language	English