To Convert a Normally Distributed Variable X into a Standard

Multiple Choice

To convert a normally distributed variable X into a standard Z score we would:

A) subtract the mean from the original observation and divide the result by the variance.
B) subtract the mean from the original observation and divide the result by the standard deviation.
C) add the mean and the original observation, then divide by the variance.
D) subtract the mean from the standard deviation and divide by the variance.