Consider an i.i.d. sample x₁... xₙ ~ Poiss (A) for λ > 0. Starting from the Central Limit Theorem, find a confidence interval I = [A, B] with asymptotic level 1-α that is centered about the plug-in method. Write barKn for Xₙ . If applicable, type abs(x) for lxl, Phi(x) for Φ (x) = P (Z quantile of a standard normal variable.) I = [A, B] for A =?