The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distribu
ted. In a recent year, the mean test score was 21.1 and the standard deviation was 5.0. Find the z-score for the student who scores a 15.
1 answer:
Answer:
- 0.40666
Step-by-step explanation:
Given that:
Mean, m = 21.1
Standard deviation, s = 5.0
Score, x = 15
Zscore formula :
Zscore = (x - m) / s
Zscore = (15 - 21.1) / 15
Zscore = - 6.1 / 15
Zscore = - 0.40666
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