1 A sorority is selling 1000 raffle tickets to raise money for a charity. The prize is a $100 gift card to the campus bookstore. Amy says that the probability that she has the winning ticket is 1. Assuming that there is no cheating and that all 1000 tickets are sold, how many raffle tickets does Amy have? She has She has She has There is 1000 tickets 100 tickets 1 ticket not enough information to answer the question Question 2 Suppose you have five friends: Malik, Samson, Quint, Jennifer, and Monique. You randomly choose one of them to attend a basketball game with you. What is the probability that you choose Quint? 0.5 (either he is chosen or he isn't) 5 0.2 0 1 Question 4 Suppose you have five friends: Malik, Samson, Quint, Jennifer, and Monique. You randomly choose one of them to attend a basketball game with you. What is the probability that you choose a friend whose name starts with the letter \"M\"? 2 1/2 2/3 2/5 3/5 Question 5 Suppose you have five friends: Malik, Samson, Quint, Jennifer, and Monique. You randomly choose four of them to attend a basketball game with you. What is the probability that Jennifer is not chosen to attend the game with you? 4 1/4 1/5 4/5 1 Question 6 Suppose you have five friends: Malik, Samson, Quint, Jennifer, and Monique. You randomly choose four of them to attend a basketball game with you. What is the probability that you choose at least one friend whose name starts with the letter \"M\"? 4 1/4 1/5 4/5 1 Question 10 0 out of 5 points The odds against racehorse #9 (named \"Southern Comfort\") winning this year's Southeastern Derby are 7 to 3 (7:3 odds against winning). What is the probability that \"Southern Comfort\" will win this year's Southeastern Derby? 7/3 3/7 0.7 0.3 0.73 Question 13 An experiment has four possible outcomes: A, B, C, and D. Which of the following is a legitimate assignment of probabilities for these four events? 0.2,0.2,0.2,0.2 0.3,0.3,0.3,0.1 06,0.2,0.3,-0.1 0.4,0.4,0.4,0.4 Both (B) and (C) Question 15 If we roll a pair of fair dice and count the number of aces (one dot) showing, the probability model is as follows: Count of aces Probability 0 1 2 The probability of no aces is 0. 1/36. 2/3 25/36. ? 10/36 1/36 Impossible to determine. Question 16 If we roll a pair of fair dice and count the number of aces (one dot) showing, the probability model is as follows: Count of aces Probability 0 ? 1 10/36 2 1/36 Back in the 17th century, some gamblers thought that the probability of at least one ace (i.e., one or more aces) when rolling two dice was 1/6 + 1/6. Is that true? Yes No, it's larger than1/6 +1/6 No, it's smaller than 1/6 + 1/6 Sometimes it's larger and sometimes it's smaller Impossible to say Question 17 Only 20 of a sample of 275 students say they are vegetarians. Of these, nine eat both fish and eggs, three eat eggs but not fish, and eight eat neither. If we choose one of those 275 students at random and the chosen student turns out to be a vegetarian, what is the probability that the chosen student eats neither fish nor eggs? 8/275 20/275 8/20 0.5 1 Question 18 A game involving a pair of dice pays you $4 with probability 16/36, costs you $2 with probability 14/36, and costs you $6 with probability 6/36. What is your approximate probability of losing money in one play of the game? 0 0.167 0.444 0.500 0.556 Question 19 Here is an assignment of probabilities to the face that comes up when rolling a die once: Outcome 1 2 3 Probability 1/7 2/7 0 Which of the following is true? 4 3/7 5 0 6 1/7 This isn't a legitimate assignment of probability, because every face of a die must have probability 1/6. This isn't a legitimate assignment of probability, because it gives probability zero to rolling a 3 or a 5. This isn't a legitimate assignment of probability, because the probabilities do not add to exactly 1. This isn't a legitimate assignment of probability, because we must actually roll the die many times to learn the true probabilities. This is a legitimate assignment of probability. Question 20 When you choose a card at random from a well-shuffled deck, the probability is 1/4 that your card belongs to any one of the four suits: clubs, diamonds, hearts, and spades. Clubs and spades are black, hearts and diamonds are red. The probability that your randomly chosen card is red is 0 1/4 1/2 3/4 1