Question

The following observations are pH values of synovial fluid (which lubricates joints and tendons) taken from knees of a random sample of individuals suffering from arthritis (Arthritis and Rheumatism, 1971, pp.476-477). Using the exact distribution of the signed-rank statistic, compute a 95% signed-rank confidence interval for the population median. Verify your answer using R.

7.02, 7.34, 7.28, 7.09, 7.45, 7.40, 7.32

Please solve this with clear step-by-step explanations. Greatly appreciated.  

Answer 1