Researchers were interested in assessing the effects of a new treatment was assessed in all participants at three time-points: (1) pre-treatment (0 treatment, and (3) after 4 weeks of treatment. Subject 0 weeks 2 weeks 4 weeks Mparticipant
Researchers were interested in assessing the effects of a new treatment was assessed in all participants at three time-points: (1) pre-treatment (0 treatment, and (3) after 4 weeks of treatment. Subject 0 weeks 2 weeks 4 weeks Mparticipant
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
what is the f critical?
what is the F observed?
what is the SS within?

Transcribed Image Text:**Study on Seasonal Affective Disorder Treatment**
Researchers aimed to assess the effects of a new treatment on seasonal affective disorder. Mood levels of participants were evaluated at the following intervals: pre-treatment (0 weeks), post-treatment two weeks (2 weeks), and four weeks (4 weeks) after commencing treatment.
### Data Table
| Subject | 0 weeks | 2 weeks | 4 weeks | M (participant) |
|---------|---------|---------|---------|----------------|
| 1 | 28 | 45 | 69 | 47.33 |
| 2 | 32 | 43 | 72 | 49 |
| 3 | 30 | 47 | 65 | 47.33 |
| 4 | 29 | 45 | 75 | 49.67 |
| 5 | 31 | 44 | 70 | 48.33 |
| **M** | **30** | **44.8**| **70.2**| |
- **M (participant)**: Average mood score per participant across all weeks.
- **M**: Mean mood score across participants at each time point.
- **GM**: Grand Mean = 48.33, representing the overall average mood score throughout the study.
### Explanation:
- **Initial Mood (0 weeks):** The participants started with varying mood scores, averaging at 30.
- **Improvement at 2 Weeks:** All participants showed an improvement by the second week, with an average score of 44.8.
- **Continued Progress at 4 Weeks:** By the fourth week, participants' moods significantly improved to an average score of 70.2.
This study indicates a positive trend in mood improvement among participants following the treatment.
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