Can someone explain to me how the cumulative mass functions for this question were integrated? This is probably a careless/obvious mistake, but my CMF just came out to be -e^{-3x} and -e^{-2x}. I don't understand why the solution says 1-e^{-3x} and 1-e^{-2x} since we're using a maximum; where does the 1 come from?
AshleyChang: March 20, 2015, 2:06 a.m.
Nevermind, I think I got it!