(a)
(b) Now we perform one way ANOVA for intensity.
Outputs are as follows:
One-way ANOVA: Rate versus Intensity
Source DF SS MS F P
Intensity 2 19.50 9.75 4.93 0.013
Error 33 65.25 1.98
Total 35 84.75
S = 1.406 R-Sq = 23.01% R-Sq(adj) = 18.34%
Individual 95% CIs For Mean Based on
Pooled StDev
Level N Mean StDev ----+---------+---------+---------+-----
1 12 5.417 1.443 (-------*-------)
2 12 6.667 1.497 (--------*-------)
3 12 7.167 1.267 (--------*-------)
Since intensity is significant so we perform Tukey's test.
seasonal affective disorder is a type of depression during seasons with less daylight one therapy for...
Seasonal affective disorder (SAD) is a type of depression during seasons with less daylight (e.g., winter months). One therapy for SAD is phototherapy, which is increased exposure to light used to improve mood. A researcher tests this therapy by exposing a sample of SAD patients to different intensities of light (low, medium, high) in a light box, either in the morning or at night (these are the times thought to be most effective for light therapy). All participants rated their...
Seasonal affective disorder (SAD) is a type of depression during seasons with less daylight (e.g., winter months). One therapy for SAD is phototherapy, which is increased exposure to light used to improve mood. A researcher tests this therapy by exposing a sample of SAD patients to different intensities of light (low, medium, high) in a light box, either in the morning or at night (these are the times thought to be most effective for light therapy). All participants rated their...
(b) Compute Tukey's HSD to analyze the significant main effect. The critical value is ? for each pairwise comparison. Summarize the results for this test using APA format. u t Al seasonal affective disorder SAD 冫교 typc cf d press on during seasons with css daylight g., wint cr mcnths One therapy for SAD s pnctotherapy, w hich s ncreased Cxposure to ght used to improve mood. A researcher tests this t crapy by cxposing ฮ sample cf paticnts ith...
25. Treating Seasonal Affective Disorder A three-arm randomized controlled trial for treating seasonal affective disorder (SAD) looked at the alleviation of SAD symptoms three weeks after beginning a therapy of cognitive behavioral therapy (CBT), light therapy (LT) or antidepressant bupropion (AB). The results are offered below Alleviation after three weeks of treatment Minor alleviation of symptoms 14 16 Major alleviation in symptoms 30 16 Therapy CBT LT AB No alleviation of symptoms 43 29 Given the table above, which of...