Dear Statalisters,

I have a regression coefficient x2=.2227885 with a SE=.056563 and a 95% Conf. Interval =(.1005915; .3449856); n=15. How do I graph the t density distribution for the coefficient showing zero is not within the 95% Conf. Interval?

For this classical regression beginners exercise, I tried the tden function but it puts zero in the center of the graph, not the coefficient value (x2=.2227885)

. twoway function y = tden(13,.x)

Any help would be greatly appreciated.