I used proc glm - means/dunnettu to perform a one tailed t-test for a difference between two means. It was wonderful, providing me with upper and lower confidence limits and indicating significance but did not provide a p-value.
So I went into the analyst and simply used the hypothesis - 2-sample t-test for means. It provided t statistics including p-values but I got different upper and lower confidence limits, they don't seem to make sense. Often the lower is a greater value than the difference between means.
How am I misinterpreting this output? Do you recommend a different course of action?