Computes confidence interval for a difference of population medians in a 2-group design.
Arguments: - alpha: alpha level for 1-alpha confidence - y1: vector of scores for group 1 - y2: vector of scores for group 2
Values: - confidence interval
alpha = .05
group1 = c(32, 39, 26, 35, 43, 27, 40, 37, 34, 29)
group2 = c(36, 44, 47, 42, 49, 39, 46, 31, 33, 48)
ci.median.is(alpha,group1, group2)
## Median1 Median2 Median1-Median2 SE LL UL
## [1,] 34.5 43 -8.5 4.316291 -16.95977 -0.04022524
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