An educational researcher believes that students learn best in small groups (fewer than three people
Question: An educational researcher believes that students learn best in small groups (fewer than three people per group) than in big groups. She selects a class of 30 biostatistics students and divides them into three treatments groups: no intervention, assignment to small study group, and assignment to large study group. At the end of the course, these are the final grades for the three groups (12 points):
No intervention | Small Group | Large Group |
87 | 87 | 89 |
86 | 85 | 91 |
76 | 99 | 96 |
56 | 85 | 87 |
78 | 79 | 89 |
98 | 81 | 90 |
77 | 82 | 89 |
66 | 78 | 96 |
75 | 85 | 96 |
67 | 91 | 93 |
What is your null hypothesis?
What is your alternative hypothesis?
Please provide all computations and statistical values related to your inferential test in the proper format, below:
SS | DF | MS | Test Statistic | p-value or critical value | |
Between | |||||
Within | |||||
Total |
Can the researcher conclude that there is a significant difference among the three groups? Can she conclude just from the data in the table above that small groups are superior to large groups or no intervention? Why or why not?
Deliverables: Word Document
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