A.107.6% B.102.1% C.134.6% D.115.7%
A.18周歲 B.16周歲 C.22周歲 D.20周歲
A.描述統(tǒng)計(jì) B.分析統(tǒng)計(jì) C.參數(shù)估計(jì) D.假設(shè)檢驗(yàn)