Can sleep time be used to predict mood? To help answer this question, a researcher randomly selected 10 freshman from her university and recorded their mood and the number of hour they slept the previous night. (Use this information and data for all subsequent questions). Mood: 2 3 7 9 9 8 5 5 7 6 Sleep: 4 5 9 8 7 6 3 4 6 5 WHAT IS THE VARIANCE (SD2) FOR MOOD