1 1 pts Which of the following is NOT a possible probability? 25/10 0 1.25 1 0 Question 2 1 pts The checking accounts of USF Credit Union are categorized by age of account and balance in account. We are going to select an account at random from this group of 2000 accounts. Then probability P(>=3 years ) = 2/5 1/10 3/5 none of these Question 3 1 pts On a multiple choice test, each question has 4 possible answers. If you make a random guess on the first question, what is the probability that you are correct? 4 1 1/4 0 Question 4 1 pts Flip a coin twice. The sample space of possible outcomes is {HT, TH} {HH, HT, TH, TT} {HH HT TT} {HH TT HT HT} Question 5 1 pts A bag contains 6 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability that it is green? 7/16 3/16 1/7 none of these Question 6 1 pts A fair die is rolled. A denotes getting a number less than 2 and B denotes getting a number greater than 4. What is probability of P(A or B) 1/3 1/2 2/3 3/4 Question 7 1 pts The marching band is holding a raffle at a football game, with two prizes. After the first ticket is pulled out and the winner determined, the ticket is taped to the prize. The next ticket is pulled out to determine the winner of the second drawing. A: the first prize and B: the second prize. These two events are said to be: independent dependent randomly independent random variables Question 8 1 pts If the probability of event A is P(A) = 12/19, what is the probability of complement event Ac P(Ac)? 7/19 12/31 0 19/12 Question 9 1 pts The checking accounts of USF Credit Union are categorized by age of account and balance in account. We are going to select an account at random from this group of 2000 accounts. What is the conditional probability that the account has a balance of at least $500, given that it is less than 3 years old, that is P(balance >=$500 | less than 3 years)? 2/5 1/2 1/3 none of these Question 10 1 pts Four hundred (400) patients are enrolled in a study to evaluate the accuracy of a test for diabetes disease. 200 of the patients were diagnosed with diabetes. 160 of the patients with diabetes had a positive test as did 10 of the patients without diabetes. What is the probability (i.e., specificity) that a patient tested negative on a test given that he/she does not have diabetes? 0.20 0.80 0.94 0.95