It's quarter to nine-- and I think I might actually understand the null hypothesis

I'm still wracking my brain about type 1 and type 2 errors

This has been a day of Statistics.  Up until now it was just Average Length of Stay, Bed count, death and autopsy rates. Last week was standard deviation, variance and correlation.

Now I got Null Hypotheses,

Art by Chris Lysy

t tests and more.

So I"m going to get something to drink-- watch mindless tv and try think about how it is going to snow tomorrow...