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In a certain set of numbers, 12.5 is 1.5 units of standard deviation above the mean, and 8.9 is 0.5 units of standard deviation below the mean. What is the mean of the set?
Give your answer to the nearest 0.1_____
Give your answer to the nearest 0.1_____
9.8 显示答案
以上解析由 考满分老师提供。
