statistics
posted by angela
Which is relatively better a score of 48
on psychology test or a score of 52 on an
economics test, Scores on the psychology test have a mean of 87 and a standard deviation of 14. Scores on the economics
test have a mean of 53 and a standard deviation of 8.

Kuai
Psychology
z =(4887)/14
z = 2.796
Economics
z =(5253)/8
z = 0.125
The score of Economics is better.
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