Study to Assess the Efficacy and Safety of Olanzapine and Fluoxetine Combination Versus Placebo in Patients Ages 10-17 in the Treatment of Major Depressive Episodes Associated With Bipolar I Disorder

The main goal of this study is to help answer the following research question(s) and not to treat the child's illness. - Can this study drug make children with bipolar depression feel better? - Does this study drug work better than a placebo (sugar pill)? - Does this study drug cause side effects in children who take it? - Is this drug safe to use in children? (The study drug is a mixture of olanzapine and fluoxetine)