Use the Following Data for the Next Questions

question 19

Short Answer

Use the following data for the next questions. Ophthalmologists studying the treatment of using an infrared laser procedure in ten patients with vision loss caused by dry age-related macular degeneration (AMD) found the following data on visual acuity (VA) before and after the procedure. Assume a .05 significance level to test the claim that there is a difference between the number of VA lines that can be read by individuals before and after the procedure. Also, assume the data consist of matched pairs, the samples are simple random samples, and the pairs of values are from a population having a distribution that is approximately
normal.
-Construct a 95% confidence interval estimate of the mean difference between the before and after number of visual acuity lines read.

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