Question

Doctors tested a new type of contact lens. Volunteers who normally wear contact lenses were given a standard type of lens for one eye and a lens made of the new material for the other. After a month of wear, the volunteers rated the level of perceived comfort for each eye.
(a) Should the new lens be used for the left or right eye for every patient?
(b) How should the data on comfort be analyzed?


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  • CreatedJuly 14, 2015
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