NO.PZ2019040801000017
问题如下:
The probability that a standard normally distributed random variable will be less than one standard deviation above its mean is:
选项:
A. 0.6827.
B. 0.8413.
C. 0.3173.
D. 0.1587.
解释:
B is correct
考点:正态分布查表
解析:F(1) = 0.8413
题目说小于一个标准差above its mean 怎么翻译?