I want to perform a t-test for a hypothesized mean of, for instance, +/-2. Is there way to do that without needing to perform the test for the positive and then for the negative value?
The following code is an example of what I am doing to test the hypothesis. I need combine the last two commands somehow to make Stata compare the obtained mean to the given limits (+/-2) instead of one value (2).
Code:
gen T3_Diff = T3_X - T3_Y ttest T3_Diff == 2 ttest T3_Diff == -2
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