In a test of ESP (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, a square, or the letter "A." As the experimenter looks at each of the 20 cards in turn, the subject names the shape on the card. A subject who is just guessing has probability 0.20 of guessing correctly on each card. What is the probability of between 5 and 11 (both inclusive) guesses in 20 cards if a subject is just guessing?