计算分半信度需要的复本个数和施测次数为:A.1,1B.2,1C.2,2D.1,2
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一组测验分数服从正态分布,其平均数为65分,标准差为5分,则分数在60~65之间的人数占总人数的百分比为。 A.15.8%B.34.1%C.50.0%D.68.3%
You must take __ for granted that I will help you. A.it B.that C.this D.its
Many countries face some serious problems of land use, __ result from population growth
__electrons are still smaller. A.As atoms small are B.As atoms smaller as C.Small as