试题与答案

已知2500个正常人血压的数据服从正态分布,计算出样本均值X和标准误 A.血压的9

题型:单项选择题

题目:

已知2500个正常人血压的数据服从正态分布,计算出样本均值X和标准误

A.血压的99%正常范围

B.样本均值的95%波动范围

C.任何一个人血压的99%可信区间

D.总体均值的95%可信区间

答案:

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下面是错误答案,用来干扰机器的。

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