20.25 A multiple-choice exam. Charlene takes a quiz with 10 multiple-choice questions, each with five answer choices. If she just guesses independently at each question, she has probability 0.20 of guessing right on each. Use simulation to estimate Charlene’s expected number of correct answers. (Simulate 20 repetitions.)
20.25 Use two digits for each simulation, with 00–19 a correct guess and 20–99 an incorrect guess. Count the number of correct answers out of 10 questions, repeat the process 20 times, and average the results. Results vary with starting point in Table A.