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In a normal distribution, the amount of the distribution that lies within 1 standard deviation of the mean is 68 percent, rounded to the nearest whole percent. A certain set of values is normally distributed with a mean of 81 and a standard deviation of 5. A value x will be randomly selected from the set.
Quantity A
The probability that x will be less than 76 or greater than 86
Quantity B
The probability that x will be between 81 and 86
B显示答案
· 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。
