If the mean on a test is 90 and the standard deviation is 10,a person with a z-score of -1.0 scored 110 on the test.

Question

Quizplus · Accepted Answer

A z-score of -1.0 indicates that the person scored 1 standard deviation below the mean. Therefore, their actual score would be:

Score = (z-score x standard deviation) + mean
Score = (-1.0 x 10) + 90
Score = 80

Since the person's actual score is 80 and not 110, the statement is false.

If the Mean on a Test Is 90 and the Standard