A factory has 20 machines which fill boxes to 32 ounces, but the machines are not perfectly accurate. For six ran- domly selected machines, the difference between 32 ounces and what was actually in the container was measured. Using random effects model, SSE = 3.5411, SSA = 2.2788, and ni = 20 for all groups. Find the standard deviation of u and standard deviation of epsilon.