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Q1) Educator is interested in researching how teaching methodology (Factor A) and previous experience with type of test (Factor B) might influence scores on particular exam. Levels of Factor A are control (implying no special instruction), group instruction, and private tutoring. Levels of Factor B are no prior experience with test, one prior experience, and two prior experiences. 27 students were available for study. Nine students from each experience level were randomly assigned to teaching conditions. Experiment ran for one month and final test was administered with following results.
Factor B: Experience
Factor A: Teaching Method
Control
Group Instruction
Private Tutor
None
60
71
77
62
75
65
76
79
Once
68
69
82
73
80
84
Twice
70
85
87
90
a) Set up hypotheses and carry out all relevant tests
b) Describe all results and implications which you have discovered.
i) This includes testing for interaction effects.
ii) This also implies testing for differences between means of levels of factors which are determined to be significant
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What is the expected shape of the distribution of the sample mean?
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