Going back to the Bristol tea experiment in the class session, let us suppose Bristol is being tested on her ability to figure out if tea or milk was first added to the cup. If she was offered 6 cups to taste, with 3 containing tea poured first, and 3 containing milk poured first in the preparation, what is the probability that she would guess the right preparation for every cup, by luck alone (i.e., she has no special ability to detect the preparation)