Calculate the conditional probability of observing a carcass after i = 1:nsi searches (assuming carcass is not previous discovered by searchers or removed by scavengers)
SEsi_right(nsi, pk)number of searches after arrival
numeric array of searcher efficiency p and k parameters (p = pk[ , 1] and k = pk[ , 2])
numeric nsi x dim(pk)[1] array of probabilities of observing a carcass after 1:nsi searches (assuming that the carcass had not been previously discovered or removed by scavengers