A pharmaceutical company is developing a treatment for blindnesscaused by diabetic retinopathy. Thus, 5 patients with advancedretinopathy were selected. For each patient, their left eye wastreated and their right eye was left untreated. The time toblindness (in months) was recorded for both eyes and all patientsas 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 intime to blindness due to treatment.
