Recent content by kweb313

  1. K

    permutations and confidence intervals

    Hello! I am in need of a little guidance on a stat problem... I've performed a permutation on two data sets, in R, regarding sunblock efficacy, and have concluded that in any permutation, there is only one instance of matching efficacy, the original data set. now I have to find a 95% C.I...
  2. K

    crazy p-value

    I am taking data analysis, and am having a bit of trouble. It has been a couple years since i took intro to stats, so i am very rusty. I performed a t-test (two sided, and both alternates) on Sleuth 2 ex0222, and I get a p value with an negative exponent. this seems ridiculous to me, and I...