设X~N(,0.32),容量9,均值5,则未知参数的置信度为0.95的置信区间是

设X~N(,0.32),容量9,均值5,则未知参数的置信度为0.95的置信区间是

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Social workers should learn how to____________ peo

Social workers should learn how to____________ people.选择一项:A. look atB. look int

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