Casio classpad 330 3.04 User Manual

20090601

Example 2 (calculation with parameter)

Mean : 300
Sample size : 6
Population standard deviation : 3
Significance level : 5% ( = confidence level : 95%)

• Statistics Wizard Operation 

(1) On the menu bar, tap [Calc] and then [Interval].
(2) Select [One-Sample ZInt] and [Variable], and then  
 

tap [Next >>]. 

(3) Input values.
(4) Tap [Next >>].

SProgram, eActivity or Main Application 

Command: OneSampleZInt

:

 C-Level 

value, 

σ value, List, Freq (or 1) 

 

* “Freq” can be omitted. Doing so sets “1” for “Freq”.

 C-Level 

value, 

σ value, 

M

 value, 

 value

OneSampleZInt  0.95,3,list1,1

OneSampleZInt  0.95,3,300,6

Menu: [Interval]-[Two-Sample 

ZInt]

Description: This command obtains the confidence interval for the difference between 

population means when the population standard deviations of two populations 
are known. 

 

The confidence interval is obtained using the following expressions.  
The confidence level is 100 (1 –

Lower = (

o

1

 – 

o

2

) – Z 

2

1

1

2

+

2

2

2

Upper = (

o

1

 – 

o

2

) + Z 

2

1

1

2

+

2

2

2

 

M

1

 :  sample mean of sample 1 data

 

M

2

 :  sample mean of sample 2 data

1

 :  population standard deviation of 

sample 1

2

 :  population standard deviation of 

sample 2

1

 :  size of sample 1

2

 :  size of sample 2