Two Population Proportion Inference
Data Summary
Counts: CLASS by TYPE
| - |
Sport |
Others |
Total |
| Domestic |
2 |
33 |
35 |
| Import |
7 |
40 |
47 |
Percentages: CLASS by TYPE
| - |
Sport |
Others |
| Domestic |
5.714286 |
94.28571 |
| Import |
14.89362 |
85.10638 |
Confidence Interval for Difference of Two Population Proportions
Success = Sport
Population 1 = Domestic, Population 2 = Import
Sample Size: Domestic = 35, Import = 47
Number of Successes: Domestic = 2, Import = 7
Proportion of Successes: Domestic = 0.05714, Import = 0.1489
Confidence level = 95%
| Method |
Midpoint |
Std Error |
Lower CL |
Upper CL |
Width |
| Large Sample z |
-0.0917933 |
0.0650865 |
-0.219361 |
0.0357739 |
0.255135 |
| Bootstrap (Percentile) |
-0.0881459 |
0.064403 |
-0.212766 |
0.0364742 |
0.24924 |
| Wilson-Score |
-0.0991226 |
0.0650865 |
-0.240883 |
0.0426377 |
0.283521 |
Bootstrap Confidence Interval Graph: CLASS
![The title of the graph is Bootstrap Distribution of Difference of Sample Proportions , The graph shows the distribution of Proportion Difference: (Domestic - Import) , hat(p)[1] - hat(p)[2] == -0.091793 , Percentile Confidence Limits: (-0.213, 0.036) , Number of Replications = 10000 , Seed = 100](ConfInterval2PopPropZExampleOutput.png)