Amitp3854 Amitp3854 16-05-2023 Mathematics contestada suppose y ∼ normal(0, σ^2) with unkown variance σ^2. (a) find the distribution of Q(Y, σ) = Y^2/σ^2 . is Q a pivotal quantity? (b) Use Q to find an 86% confidence interval for σ^2