Interactive practice questions
Xanthe scored $87.2$87.2 in her English exam, where the mean score was $76$76 and standard deviation was $7$7. She scored $57$57 in her Philosophy exam, where the mean score was $42$42 and the standard deviation was $5$5.
a
Find the $z$z-score of Xanthe's English results.
b
Find the $z$z-score of Xanthe's Philosophy results.
c
In which subject did Xanthe perform better?
English
A
Philosophy
B
Medium
1min
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