In: Statistics and Probability
data set
yes 27 no 4
find the 95% and 99% confidence intervals for p
for this categorical data, confidence intervals for p is performed.
p=27/31= 0.8710

95% CI for p= (0.7530, 0.9890)
99% CI for p= (0.7159, 1.0261)
| 
 Confidence Interval Estimate for the Proportion  | 
|
| 
 Data  | 
|
| 
 Sample Size  | 
 31  | 
| 
 Number of Successes  | 
 27  | 
| 
 Confidence Level  | 
 95%  | 
| 
 Intermediate Calculations  | 
|
| 
 Sample Proportion  | 
 0.8710  | 
| 
 Z Value  | 
 1.9600  | 
| 
 Standard Error of the Proportion  | 
 0.0602  | 
| 
 Interval Half Width  | 
 0.1180  | 
| 
 Confidence Interval  | 
|
| 
 Interval Lower Limit  | 
 0.7530  | 
| 
 Interval Upper Limit  | 
 0.9890  | 
| 
 Confidence Interval Estimate for the Proportion  | 
|
| 
 Data  | 
|
| 
 Sample Size  | 
 31  | 
| 
 Number of Successes  | 
 27  | 
| 
 Confidence Level  | 
 99%  | 
| 
 Intermediate Calculations  | 
|
| 
 Sample Proportion  | 
 0.8710  | 
| 
 Z Value  | 
 2.576  | 
| 
 Standard Error of the Proportion  | 
 0.0602  | 
| 
 Interval Half Width  | 
 0.1551  | 
| 
 Confidence Interval  | 
|
| 
 Interval Lower Limit  | 
 0.7159  | 
| 
 Interval Upper Limit  | 
 1.0261  |