A.10% B.4.5% C.4% D.2% E.1%
A.Belk和Sunderman B.Levey和Jennings C.J.OWestgard D.T.P.Whitehead E.W.A·Shewhart
A.Shewhar B.Levey和Jennings C.J.OWestgard D.Henry E.Segalove