Question: Interaction? Are the slopes of the two lines different? [Note: The slope is the difference between the two averages for a level of one variable,
Interaction? Are the slopes of the two lines different? [Note: The slope is the difference between the two averages for a level of one variable, across the levels of the second variable. If the slope is right-rising it is a positive number, and if right-falling it is a negative number.] Main Effect of Cell Phone? Is the mean reaction time for Not on Cell group different from the mean reaction time for the On Cell group? Main Effect of Age? Is the mean reaction time for the Old group different from the mean reaction time for the Young group
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