On Sat, Jun 5, 2021, 2:00 PM Karl <[1]gmkarl@gmail.com> wrote:

   On Sat, Jun 5, 2021, 1:58 PM Karl <[2]gmkarl@gmail.com> wrote:

   X(t) ~= (number of people who have arrived between 0 and t) - (number
   of people who have been fully served between 0 and t)

   Both of these values are calculable.

   S_n is the number of minutes that pass after person (n-1) arrives,
   before person n arrives.

   We can likely write both of these in abstract parts, as X(t) is written
   above.

References

   1. mailto:gmkarl@gmail.com
   2. mailto:gmkarl@gmail.com