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题目来源1 : 2025年2月GRE机经
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难度：3
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The figure shows a normal distribution with mean m and standard deviation d, including approximate percents of the distribution corresponding to the six regions shown. The random variable W is normally distributed with mean $$50$$ and standard deviation $$9$$. Which of the following is closest to the value of W at the $$25^{th}$$ percentile of the distribution?
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· 相关考点
5.3.2 正态分布
5.3.2 正态分布
以上解析由 考满分老师提供。
