Answer: Psychology test score is relatively better than economics test score.
Step-by-step explanation:
For this question, we are using Z-score to compare the psychology test score and economics test score.
Z-scores are an approach to compare results from a test with a "normal" population.
Z = [tex]\frac{X - u}{S.D}[/tex]
where,
X - Test score
u - Mean
S.D - Standard deviation
Psychology Test:
Z = [tex]\frac{87 - 92}{5}[/tex]
= [tex]\frac{-5}{5}[/tex]
= -1
Economics Test:
Z = [tex]\frac{52 - 62}{6}[/tex]
= [tex]\frac{-10}{6}[/tex]
= -1.6
Hence, above calculation shows that z- score for pshychology test is greater than the z- score for economics test. so, psychology test score is better than economics test score.
