The question talks about complaints received at some complaints department. The complaints are: Straightforward, or Of Medium difficulty, or Complicated The question then says that responses (in person days) to these complaints follow exponential distributions with parameters 2 for straightforward, 1 for medium and 0.25 for complicated. Which doesn't make sense to me - I mean, it sounds like it's saying that a complicated complaint takes the least amount of time (0.25 days per response) to respond to and a straightforward one takes the most amount of time (2 days per response) The solution suggests that I am reading thins incorrectly but I still can't seem to see why. Can anyone explain this please?