在一个饭店门口等待出租车的时间是左偏的，均值为 12 分钟，标准差为 3 分钟。如果从饭店门口随机抽取 100 名顾客并记录他们等待出租车的时间，则该样本均值的分布服从() -题库考试答案搜索网

在一个饭店门口等待出租车的时间是左偏的，均值为 12 分钟，标准差为 3 分钟。如果从饭店门口随机抽取 100 名顾客并记录他们等待出租车的时间，则该样本均值的分布服从()

单选题

2021-09-02 16:38

A、正态分布，均值为 12 分钟，标准差为 0.3分钟
B、正态分布，均值为 12 分钟，标准差为 3 分钟
C、左偏分布，均值为 12 分钟，标准差为 3 分钟
D、左偏分布，均值为 12 分钟，标准差为 0.3分钟

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正确答案

A

试题解析

标签：文才郑州工程技术学院统计学

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