A.必然事件
B.不可能事件
C.小概率事件
D.大概率事件
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A.原假設(shè)為真的條件下檢驗(yàn)統(tǒng)計(jì)量的概率分布
B.備擇假設(shè)為真的條件下檢驗(yàn)統(tǒng)計(jì)量的概率分布
C.觀測(cè)變量的總體概率分布
D.觀測(cè)變量的樣本分布
A.α
B.β
C.1-α
D.1-β
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最新試題
A summary measure that is computed from a sample to describe a characteristic of the population is called()
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). Personnel records of 50 employees are selected for analysis. (The plant employs 250.) For this study, the average number days absent for these 50 employees is a ().
A cumulative frequency distribution would provide().
Descriptive statistics deals with methods of()
什么是季節(jié)變動(dòng)?研究它的意義何在?如何測(cè)定季節(jié)變動(dòng)?