Casio CFX-9970G User Manual page 317

u u u u u 1-Prop Z Interval
Z
1-Prop Interval uses the number of data to calculate the confidence interval
when the proportion is not known. The 1-Prop
normal distribution.
The following is the confidence interval.
x
– Z )
Left =
n
2
x
Right = + Z
n
Perform the following key operation from the statistical data list.
4(INTR)
1(Z)
3(1-P)
Data is specified using parameter specification. The following shows the meaning
of each item.
C-Level ........... confidence level (0 < C-Level < 1)
x
..................... data (0 or positive integer)
n
..................... sample size (positive integer)
Execute .......... executes a calculation
Example To calculate the 1-Prop
specification
For this example, we will obtain the 1-Prop
C-Level = 0.99,
a.jjw
ffw
baaw
1(CALC)
Left ................. interval lower limit (left edge)
Right ............... interval upper limit (right edge)
ˆ p
..................... expected p-value
n
..................... sample size
1 x x
1–
n n n
1
x x
)
1–
n n n
2
Z
Interval using parameter value
x
= 55, and
Confidence Interval
Z
Interval is applied to standard
n
: sample size
x
: data
Z
Interval when
n
= 100.
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