Posted by **Anonymous** on Saturday, August 17, 2013 at 2:45am.

A group of scientists is studying whether a new medical treatment has an adverse (bad) effect on lung function. Here are data on a simple random sample of 10 patients taken from a large population of patients in the study. Both variables are measurements, in liters, of the amount of air that the patient can blow out (this is a very rough description of a well-defined measure). The bigger a measurement is, the better the lung function. The “baseline” measurement was taken before the treatment, and the “final” measurement was taken after the treatment.

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