In an experiment to determine whether seeding clouds with silver iodide increases rainfall, 52 clouds were randomly assigned to be seeded or not. The amount of rain they generated was then measured (in acre-feet).
Create a 95% confidence interval for the average amount of additional rain created by seeding clouds. Explain what your interval means.
|
Unseeded Clouds |
Seeded Clouds |
| Count |
26 |
26 |
| Mean |
164.588 |
441.985 |
| Median |
44.2 |
221.6 |
| SD |
278.426 |
650.787 |
| IntQRange |
138.6 |
337.6 |
| 25 %ile |
24.4 |
92.4 |
| 75 %ile |
163 |
430 |