When a given point under the normal curve is 1.54 standard deviation units above the mean, then
A) its percentile is 15.4
B) its percentile is 1.54
C) its z score is +1.54
D) both a and c, but not b

Question

Quizplus · Accepted Answer

A z-score of +1.54 indicates that the given point is 1.54 standard deviation units above the mean, which directly corresponds to option C. Percentiles are not directly equivalent to standard deviation units or z-scores, making options A and B incorrect.

When a Given Point Under the Normal Curve Is 1