Part 2 Someone mentioned that there might also be a gender effect on the reported hours of sleep on a school night, as well as a potential interaction effect between gender and gradelevel. Now re-run the analysis for SleepDuration using GradeLevel and Gender in a Two-Way ANOVA, make a means plot and descriptive statistics table. Include your output and use it to answer the following questions. 8. (0 points) Using your output, is it reasonable to pool the variances? Why or why not? 9. (0 points) Regardless of your answer to question 8 continue with the analysis. Looking at your means plot ("Estimated Marginal Means" in your SPSS output), what does it tell you about each of the main effects and their interaction? Please explain how the plot tells you this