Bob took a biology exam whose mean was 70 with standard deviation 5 . He also took a chemistry exam whose mean was 80 with standard deviation 10 . He scored 85 on both exams. On which exam did he do better compared to the other students who took the exam?
A. He did better on the biology exam, comparatively speaking.
B. He did better on the chemistry exam, comparatively speaking.
C. He did the same on both exams, relatively speaking.
D. Can't tell without more information.
Analysis:
A. Correct. He did better on the biology exam, comparatively speaking.
B. Incorrect. He did better on the biology exam, comparatively speaking.
C. Incorrect. He did better on the biology exam, comparatively speaking.
D. Incorrect. He did better on the biology exam, comparatively speaking.
ANSWER : A
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