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Learning performance was evaluated for students who read a passage printed on paper or on a computer screen (mode of presentation). The passage reading time

Learning performance was evaluated for students who read a passage printed on paper or on a computer screen (mode of presentation). The passage reading time was either self-regulated or controlled by the experimenter (Time control). The dependent variable is performance on a quiz covering the text

Paper Computer Screen

Self-regulated Time Control Self-regulated Time Control

11 10 4 10

8 7 4 6

9 10 8 10

10 6 5 10

7 7 4 9

1. Conducta 2(mode of presentation) x 2 (Time control) anova and paste the anova output table below.

What value from the anova table above is the denominator of all F ratios? _________

What value from the anova table above variance among the main effect means of drug?________

What value from the anova table above is the variance due to chance? _________

What value from the anova table above is the variance among the six group means that remains after subtracting the variance due to the main effects? ________

2. Do you have homogeneity of variance? Paste the test results below.

3. Is the main effect of mode of presentation significant?

4. Is the main effect of Time Control significant?

5. The interaction of mode of presentation x Time Control is significant. Conduct a subsequent Tukey test to examine the effects of time separately at each level of mode.

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