If the tail of a normal distribution contains exactly 25 of

If the tail of a normal distribution contains exactly 2.5% of the scores, then what is the z-score value that separates the tail from the body of the distribution?

z = 1.96

z = -1.96

either z = 1.96 or z = -1.96

none of these answers is correct

Solution

either z = 1.96 or z = -1.96