User Guide

20050501
Input Example:
Syntax 1 (list format)
TwoSampleZInt 0.95,1,1.5,list1,list2,1,1
Syntax 2 (parameter format)
TwoSampleZInt 0.95,1,1.5,418,40,402,50
Calculation Result Output
Left : interval lower limit (left edge)
Right : interval upper limit (right edge)
o1 : mean of sample 1 data
o2 : mean of sample 2 data
x1 σ n-1 : standard deviation of sample 1 (Displayed only for list format.)
x2 σ n-1 : standard deviation of sample 2 (Displayed only for list format.)
n1 : size of sample 1
n2 : size of sample 2
1-Prop Z Interval
Command: OnePropZInt 䡺
Description: This command obtains the confidence interval of the proportion of successes
in a population.
The confidence interval is obtained using the following expressions.
The confidence level is 100 (1 – α )%.
Left = – Z
α
2
Right = + Z
x
n
n
1
n
x
n
x
1–
x
n
α
2
n
1
n
x
n
x
1–
n: sample size
x: data
Command Syntax
C-Level value, x value, n value
Definition of Terms
C-Level: confidence level (0 < C-Level < 1)
x : data (0 or positive integer)
n : sample size (positive integer)
Input Example:
OnePropZInt 0.95,600,800
Calculation Result Output
Left : interval lower limit (left edge)
Right : interval upper limit (right edge)
ˆp : estimated sample proportion
n : sample size
7-10-4
Confidence Intervals