What is the null and alternative hypothesis for the test? What is the p-value for this test? Write your conclusion based on this data analysis? Based on the data we can conclude that subjects who participate in reminiscence therapy experience have a decline in GDS depression scores observed at a 1% level of significance. What assumptions must be made in this experiment? Are all assumptions satisfied? Explain.
Ellen Davis Jones studied the effects of reminiscence therapy for older women with depression. She studied 15 women 60 years or older residing for 3 months or longer in an assisted living long-term care facility. For this study, depression was measured by the Geriatric Depression Scale (GDS). Higher scores indicate more severe depression symptoms. The participants received reminiscence therapy for long-term care, which uses family photographs, scrapbooks, and personal memorabilia to stimulate memory and conversation among group members. Pre-treatment and post-treatment depression scores are given in the following table. Can we conclude, based on these data, that subjects who participate in reminiscence therapy exercise, on average, a decline in GDS depression scores? Assume that alpha = 0.01.
|
Pre-GDS |
12 |
10 |
16 |
2 |
12 |
18 |
11 |
16 |
10 |
14 |
|
Post-GDS |
11 |
10 |
11 |
3 |
9 |
13 |
8 |
14 |
10 |
12 |
What is the null and alternative hypothesis for the test?
What is the p-value for this test?
Write your conclusion based on this data analysis?
Based on the data we can conclude that subjects who participate in reminiscence therapy experience have a decline in GDS depression scores observed at a 1% level of significance.
What assumptions must be made in this experiment?
Are all assumptions satisfied? Explain.
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