Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Statistical table
| Data structure | Type of test | Power | |
|---|---|---|---|
| 153 | Normal distribution | Paired t test | 0.97 |
| 169 | Normal distribution | Paired t test | 0.70 |
| 184 | Normal distribution | Paired t test | 1 |
| 190 | Normal distribution | Paired t test | 0.99 |
| 191 | Normal distribution | Paired t test | 0.99 |
| 236 | Normal distribution | Paired t test | 0.65 |
