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The figure above shows a normal distribution with mean $$m$$ and standard deviation $$d$$, including approximate percents of the distribution corresponding to the six regions shown.
A survey of 5,500 book readers found that the number of books read per year was approximately normally distributed with mean 19.0 and standard deviation 2.0. Which of the following is the best description of the numbers of books read per year by the 880 book readers who read the most books?
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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。