Confidence Interval Command List - Casio ClassPad 300 User Manual

Confidence Interval Command List

k Z
Confidence Interval
Z
1-Sample Interval
Command: OneSampleZInt
Description: This command obtains the confidence interval for the population mean when
the population standard deviation is known.
The confidence interval is obtained using the following expressions.
α is the significance level, and 100 (1 – α )% is the confidence level. When the
confidence level is 95%, for example, you would input 0.95, which produces
α = 1 – 0.95 = 0.05.
Command Syntax
Syntax 1 (list format)
C-Level value, σ value, List, Freq (or 1)
* "Freq" can be omitted. Doing so sets "1" for "Freq".
Syntax 2 (parameter format)
C-Level value, σ value,
Definition of Terms
C-Level : confidence level (0 < C-Level < 1)
σ :
List :
Freq :
o
:
n
:
Input Example:
Syntax 1 (list format)
OneSampleZInt 0.95,1,list1,1
Syntax 2 (parameter format)
OneSampleZInt 0.95,1,64.3,20
7-10-2
Confidence Intervals
Left = o – Z α σ
2 n
Right = o + Z α σ
2
n
o
value,
population standard deviation ( σ > 0)
list where sample data is located
frequency of sample (1 or list name)
mean of sample data
sample size (positive integer)
20021201
n
value