Final answer:
To find the z-score halfway between two z-scores, calculate the average of the given z-scores.
Step-by-step explanation:
The question is asking about finding the z-score halfway between two given z-scores.
To find the z-score halfway between two z-scores, we need to calculate the average of the given z-scores. In this case, the given z-scores are +2 and -2, so the average is 0.
Therefore, the z-score halfway between +2 and -2 is 0.