For a normal distribution, a positive value of z indicates that
A) all the observations must have had positive values.
B) the area corresponding to the z is either positive or negative.
C) the sample mean is smaller than the population mean.
D) the sample mean is larger than the population mean.

Question

Quizplus · Accepted Answer

A positive z-score indicates that the observation is above the mean, which means the sample mean is larger than the population mean.

For a Normal Distribution, a Positive Value of Z Indicates