is question: o Submit test point(s) possible Find p if u = _ [x . P(x)]. Then, find a if of = [ [x2 . P(x)] - H2. X P(X) O 0.227 0.435 2 0.278 0.060 (Simplify your answer. Round to three decimal places as needed.) O= (Simplify your answer. Round to three decimal places as needed.)