The problem states:
The weekly demand for propane gas (in 1000s of gallons) from a particular facility is an rv X with pdf
As far as I understand, to solve the problem I need to calculate:
Ok, I tried it both ways and got:
if h(x)=1.5-x, then
Maybe I do not understand it at all, but: If pdf is defined for the [1,2] range, does that mean that we expect "the demand" to be at least 1, but no more than 2? but from this point of view the 1.5 at the beginning of the week will satisfy part of the demand and at the end of the week we would have a shortage. So negative amount should be the correct answer?
You can not have here a minus expectation of oil left. I think you say it is 0.
Last edited by bobbym (2013-03-06 23:10:29)
In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.