QUESTION 1 ljust completed an independent groups experiment. My experimental group had 10 participants and my control group had 10 participants. The estimated population variance based on my experimental group was 12. The estimated population variance based on my control group was 8. What is the pooled variance? (Hint: what is special about calculating the pooled variance when the two groups have the same N?) 8 12 'IO 20 QUESTION 2 To test whether listening to PSYC104O lecture recordings while you sleep improves your grade, I conducted an independent groups experiment. One group listened to PSYC104O lecture recordings while they slept. The other group listened to Harry Potter audiobooks. Taking the positive difference between the group means, I found a mean difference of 'l 0% with a 95% condence interval of +/- 20%. Therefore, assuming an alpha level of 0.05, we retain the Null hypothesis we reject the Null hypothesis we retain the Alternate hypothesis we reject the Alternate hypothesis