Quote:
Originally Posted by hunkal
I don't remember which number that was, maybe 4? I used binomial with p being probability of sick or healthy at beginning year 3 and n is 1000. I got 1 phi of 1.101 which is .1335 but the closest answer was 13.6% so not sure if I did something wrong

i did prob of being sick at the beg of year 3 (so two time periods) then 1000*prob and variance is 1000*(1prob)*prob and then did the normal approx.
it wasn't four because i struggled with four.. and i remember totally guessing that.