DIRECTIONS: (Choose the single best answer. ) You have 8 minutes to complete the quiz. Suppose that 10% of students at American universities have used bitcoin, a digital form of money, to make at least one purchase. If 15 UI students are randomly selected ... 1. What is the probability that 13 of them have not used bitcoin? (a) 0.000 (b) 0.267 (c) 0.816 (d) 1.000 (e) None of the answers is correct to the third decimal place 2. What is the probability that between 4 and 8 of them have used bitcoin? (a) 0.000 (b) 0.002 (c) 0.987 (d) 0.998 (e) None of the answers is correct to the third decimal place 3. On average, how many out of the 15 students would we expect to not have used bitcoin? (a) 0 (b) 1.5 (c) 7.5 (d) 13.5 (e) None of the answers is correct to the first decimal place