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What proportion of people has astigmatism level that is less than 2.2 diopter?
A. 10%
B. 25%
C. 55%
D. 65%
The number of people with 0.5 diopter, 1.0 diopter and 2.0 diopter is 11.
Thus (11/20) * 100% = 55%.
 
 
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Exam Details
 
 
Tests knowledge of and concepts principles of chemistry and physics.
Taken: 3,709 times
Added: 5/26/2008
Liked: 1 time
Audience: University / College

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