Questions 31 to 34 are based on the following information: Research showed that 20% of teenagers listen to their iPods at dangerous volumes (more than 85dB). A fixed number of teenagers listening to music on their iPods are randomly chosen. Note that this number differs from question to question. Let X = The number of teenagers that listen to their iPods at dangerous volumes Question 31 (1) Which one of the following requirements forX to be binomial distributed, is not being met? (A) Each trail results in one of two possible outcomes. (B)The experiment consists of a fixed number of trials. (C)The probability of success on a single trial remains the same from trial to trial. (D)The trials are independent. (E) All of the requirements are being met Question 32 (2) Fifteen (15) teenagers listening to music on their iPods are randomly chosen. What is the probability that at least 6 but not more than 8 of this sample are listening at a dangerous volume? | (A) 0.0568 (B) 0.0603 | (C) 0.0173 | (D) 0.0181 (E) 0.0500 Question 33 (1) Fifty (50) teenagers listening to music on their iPods are randomly chosen. What is the eXoected number of teena-ers listenino at a dan-erous volume? (A) 6 (B) 7 (C) 8 (D) 9 (E) 10 Question 34 (2) Two hundred (200) teenagers listening to music on their iPods are randomly chosen. What is the approximate probability that at most 45 of this sample are listening at a dangerous volume? I (A) n 5675 | (R) 0 8106 | 1m n 7881 | (m 11 1am | (1:) n man |