This document tests the effects of gender and year in school on negative sleeping habits. It examines 1) the effect of gender on sleeping habits, 2) the effect of year in school on sleeping habits, and 3) whether the effect of year in school depends on gender. Higher scores reflect more negative sleeping habits. The analysis provides statistics on the main effects of gender and year in school, and the interaction between gender and year in school on negative sleeping habits.

1. The following output tests three questions. 1) What is the effect of gender (male = 0; female = 1)
on negative sleeping habits (i.e., falling asleep at inappropriate times)?
2) What is the effect of year in school (1 = freshman; 2 = sophomore; 3 = junior; 4 = senior) on
negative sleeping habits?
3) Does the effect of year in school on negative sleeping habits depend on whether the
participant was a man or a woman?
Higher scores reflect more negative sleeping habits, and responses were recorded on a 0 to 3
scale.
1. Provide the statistics for the main effect of participant gender.
2. Provide the statistics for the main effect of year in school.
3. Provide the statistics for the interaction between participant gender and year in school.
4. How would you write up the results presented above. Make sure to note both the main effects
and interaction; even if they are not significant.