问题
单项选择题
Standardizing a normally distributed random Variable requires the:（）
A. mean, variance and skewness.
B. mean and the standard deviation.
C. natural logarithm of X.
答案
参考答案：B
解析：
All that is necessary is to know the mean and the variance. Subtracting the mean from the random variable and dividing the difference by the standard deviation standardizes the variable.
