A researcher tests the question of whether participation in community-sponsored services ( such as card games, field trips, etc..) increases the quality of life (as rated from 1 to 10) for older Americans. The research implements the treatment over a 6-month period and then, at the end of the treatment period,measures quality of life in the two groups ( each consisting of 50 participants over the age of 80 where one group got the services and one group did not). Here are the results you will need to complete the t-test, use an alpha of .05
|
No Community Services |
Community Services |
| Mean |
6.90 |
7.46 |
| Standard Deviation |
1.03 |
1.53 |