About how many participants are needed in each group for 80% power in each of the following planned studies, using the analysis of variance with p < 0.05? Use the accompanying table of approximate numbers of participants needed. Predicted Effect Size Number of Groups (a) Small 5 (b) Medium 3 (c) Small (d) Large 4
About how many participants are needed in each group for 80% power in each of the following planned studies, using the analysis of variance with p < 0.05? Use the accompanying table of approximate numbers of participants needed. Predicted Effect Size Number of Groups (a) Small 5 (b) Medium 3 (c) Small (d) Large 4
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![About how many participants are needed in each group for 80% power in each of the following planned studies, using the analysis of variance with p < 0.05? Use the accompanying table
of approximate numbers of participants needed.
Predicted Effect Size Number of Groups
(а)
Small
(b)
Medium
3
(c)
Small
4
(d)
Large
4](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F04c52921-cfa4-41e1-9a17-e97aadee2312%2F76508c3d-3a72-42d7-8d56-c0af11d482d5%2Flvmfzmp_processed.png&w=3840&q=75)
Transcribed Image Text:About how many participants are needed in each group for 80% power in each of the following planned studies, using the analysis of variance with p < 0.05? Use the accompanying table
of approximate numbers of participants needed.
Predicted Effect Size Number of Groups
(а)
Small
(b)
Medium
3
(c)
Small
4
(d)
Large
4
![Approximate Number of Participants Needed in Each Group (Assuming Equal Sample Sizes) for 80%
Power for the One-Way Analysis of Variance Testing Hypotheses at the 0.05 Significance Level
Effect Size
Small
Medium
Large
(R2 = .14)
(R² = .01)
(R2 = .06)
322
Three groups (dbutweoen = 2)
Four groups (dfaatwoen = 3)
Five groups (dfeatwen
52
21
274
45
18
4)
240
39
16](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F04c52921-cfa4-41e1-9a17-e97aadee2312%2F76508c3d-3a72-42d7-8d56-c0af11d482d5%2Fobec9bi_processed.png&w=3840&q=75)
Transcribed Image Text:Approximate Number of Participants Needed in Each Group (Assuming Equal Sample Sizes) for 80%
Power for the One-Way Analysis of Variance Testing Hypotheses at the 0.05 Significance Level
Effect Size
Small
Medium
Large
(R2 = .14)
(R² = .01)
(R2 = .06)
322
Three groups (dbutweoen = 2)
Four groups (dfaatwoen = 3)
Five groups (dfeatwen
52
21
274
45
18
4)
240
39
16
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