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In: Statistics and Probability

A pharmaceutical company is developing a treatment for blindness caused by diabetic retinopathy. Thus, 5 patients...

A pharmaceutical company is developing a treatment for blindness caused by diabetic retinopathy. Thus, 5 patients with advanced retinopathy were selected. For each patient, their left eye was treated and their right eye was left untreated. The time to blindness (in months) was recorded for both eyes and all patients as follows:

Patient 1 2 3 4 5
Treated Eye 51.1 49.0 49.6 47.7 50.5
Untreated Eye 28.7 31.2 35.6 36.2 40.5

Calculate a 95% confidence interval to assess the difference in time to blindness due to treatment.

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