please see attached word doc for problem, I could not get all the symbols to properly display on the thread.
there are 2 problems, 1st uses the survival function and the second is using de moivre's law. any help would be appreciated
Many members do not open attached files of any sort - and with good reason.
It would be easier for everyone if you just typed your questions rather than attaching them as a word file. That way they can be easily seen and quoted.
If you want to help, it's in your own self-interest to make things as easy as possible for people.
i think i figured it out if anyone can check my work.
a.
μ(4) = -s'(x)/s(x) = .08/.84 = .0952
b.
°e8 = E[T(8)] = ∫ (from 0 to infin) tp8 dt
= ∫ [1-.01(8+t)^2] / [1-.01(8^2)]
= .36 ∫ 1-.64-.16t-.01t^2 dt =
= [.36t-.08t^2-(.01/3)t^3]l (from 0 to 2) *[(.36)]
= (.72-.32-.27)*.36 = .1344