Casio fx-9860G SD User Manual page 341

u u u u u 1-Prop Z Interval
Z
1-Prop Interval uses the number of data to calculate the confidence interval for an
unknown proportion of successes.
The following is the confidence interval.
is the confidence level.
x
Left =
n
Right =
Perform the following key operations 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
.................................. size of sample (positive integer)
Save Res .................... list for storage of calculation results (None or List 1 to 26)
Execute ....................... executes a calculation
After setting all the parameters, use c to move the highlighting to "Execute" and then press
the function key shown below to perform the calculation.
• 1(CALC) ... Performs the calculation.
Calculation Result Output Example
Left .............................. confidence interval lower limit (left edge)
Right ............................ confidence interval upper limit (right edge)
ˆ p
.................................. estimated sample proportion
n
.................................. size of sample
6-6-6
Confidence Interval
is the level of significance. The value 100 (1 – ) %
1
x x
– Z 1–
n n n
2
1 x x
x
1–
+ Z
n n n
n
2
20050401
n
: size of sample
x
: data