Question

If a data value in a normal distribution has a negative z-score, which of the following must be true?


The data value must be negative.
The data value must be positive.
The data value must be less than the mean.
The data value must be greater than the mean.

Answer 1

Hint:
Recall that Z-score = \((x-\mu)/\sigma\), x is the data value.
Decide when the Z-score can be negative.

Answer 2

thanks...

Answer 3

You're welcome! :)