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ZX-6DD8ADB2942024年3月D卷 · 第 9 题
2024年3月D卷 · 原库模块 1 · Q9 原库参考解析
The average (arithmetic mean) of a list of 1,000 numbers is 32 , and the standard deviation is d, where d > 0. Which of the following two numbers, when added to the list, will result in a list of 1,002 numbers with a standard deviation of less than d ?
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