20090601
Input Example:
Syntax 1 (li
s
t format)
TwoSampleZInt 0.95,15.5,13.5,list1,list2,1,1
Syntax 2 (parameter format)
TwoSampleZInt 0.95,1,1.5,418,40,402,50
1-Prop
Z
Interval
Menu:
[Interval]-[One-Prop
ZInt]
De
s
cription:
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 –
A
)%.
n
: sample size
x
: data
Definition of Term
s
C-Level: confidence level (0
C-Level < 1)
x
:
data (0 or positive integer)
n
:
sample size (positive integer)
Calculation Re
s
ult Output
Lower : interval lower limit (left edge)
Upper : interval upper limit (right edge)
ˆ p
:
estimated sample proportion
n
:
sample size
Example
Data : 2048
Sample size : 4040
Significance level : 1% ( = confidence level : 99%)
• Stati
s
tic
s
Wizard Operation
(1) On the menu bar, tap [Calc] and then [Interval].
(2) Select [One-Prop ZInt] and then tap [Next >>].
(3) Input values.
(4) Tap [Next >>].
2
Lower
=
–
Z
x
n
n
1
n
x
n
x
1
–
Upper
=
+
Z
x
n
2
n
1
n
x
n
x
1
–
2
Lower
=
–
Z
x
n
n
1
n
x
n
x
1
–
Upper
=
+
Z
x
n
2
n
1
n
x
n
x
1
–
7-10-5
Confidence Intervals
Summary of Contents for ClassPad 330
Page 11: ...20060301 20090601 ClassPad 330 ClassPad OS Version 3 04 ...
Page 277: ...20060301 3 3 10 Storing Functions 3 Tap AND Plot OR Plot ...
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Page 780: ...20090601 S Graph Line 100 Stacked F S Graph Column Clustered G 13 9 3 Graphing ...
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