【单选题】【消耗次数:1】
正态分布曲线下,横轴上,从μ-1、96σ到μ+1、96σ的面积为( )
95%
49.5%
99%
97%
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相关题目
【单选题】 标准正态曲线下,横轴上从0到1.96的面积为
①  95%
②  99%
③  47.5%
④  45%
【单选题】 标准正态分布曲线下,从横轴上-1.96~1.96表示的曲线面积是()%:
①  90
②  95
③  99
④  5
【判断题】 标准正态曲线下,横轴上从–∞到0的面积为0.95。
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②  错误
【单选题】 正态曲线下,横轴上从均数到+∞的面积为
①  50%
②  95%
③  97.5%
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【单选题】 面积为4c㎡的正方形,按1:2的比例画出的图形面积为( )
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②  2c㎡
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【单选题】 面积为4c㎡的正方形,按1:2的比例画出的图形面积为[填空]
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【单选题】 药物的时量曲线下面积反映:
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③ 
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【判断题】 当n<50,nπ和n(1-π)均小于5时,二项分布分布接近正态分布
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【单选题】 5.____the front door____, he had to enter the room through the back door.
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【单选题】 14.The thief fell to the ground,his left foot ____and blood ____down from his mouth.
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【单选题】 4.____the diamond, he had to look for a place to hide it.
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【单选题】 6.And there, almost____in the big chair, sat her little brother, who never had to be told to keep quiet.
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【单选题】 17.____, the subject was always in my mind.
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