A.169.2±1.96×5÷10;169.2±1.96×5÷10 B.169.2±1.%×5÷10;169.2±1.96×5 C.169.2±1.96×5;169.2±1.96×5÷10 D.169.2±1.96×5;169.2+1.96×5 E.169.2±1.96×5;169.2±5
A.34% B.11% C.10% D.6% E.18%
A.單純隨機抽樣 B.機械抽樣 C.分層抽樣 D.整群抽樣 E.分層整群抽樣