multiple choices

I. Write the letter of the correct answer on the blank. Write E before the number if there is no answer. Use another sheet of paper for your solution. 1. Which of the following is NOT a possible value of probability? a. 0% b. 50% c. 100% d. 125% 2. What do you call the set of all possible outcomes of an experiment? a. sample point c. sample size b. sample set d. sample space 3. A pair of dice is tossed. What is the probability of obtaining a sum of 7? a. 5 36 b. C . 36 d. 4 4. What is the probability of drawing a face card or an ace from a deck of playing cards? a . 13 b . 13 C . 13 d. 5 13 5. A box contains 5 red, 4 blue, and 3 white balls. If a ball is chosen at random, what is the probability that it is not red? a. Al- b. w / r C . d. Z 12 12 6. In problem 5, what is the probability of drawing a red ball or a white ball? a. 13 b. 5 12 C. 12 d. W / N 7. What is the probability of drawing a face card or a spade from a deck of cards? a . 3 b. 13 15 52 C. d. 11 13 52 26 8. What is the probability of getting a tail in the first draw and a head in the second draw if a coin is tossed twice? a. 4 b. 3 C. d. 1 29. What is the probability of getting at most the sum of 3 in casting a pair of dice? - b. C. d. 0 /- a. 18 12 36 10. Which of the following is/are TRUE about binomial probability distribution? i. The experiment consists of n repeated trials. ii. There are many possible outcomes. iii. The repeated trials are dependent. iv. The probability of success is constant a. I only c. IV only b. II and III d. I and IV 11. Which of the following is/are FALSE about binomial probability distribution? i. The experiment consists of n repeated trials. ii. There are many possible outcomes. iii. The repeated trials are dependent. iv. The probability of success is constant a. II only c. IV only b. I and III d. II and IV 12. In three tosses of a die, find the probability that a 5 will appear twice? a. 72 b. C. al- d . a / ur 72 13. A law professor observed that only 25% of the students who get admitted to the freshmen class usually reached fourth year. Assuming that this is correct, the probability that among 15 randomly selected first year students, exactly 8 students will reach fourth year? a. 0.31% b. 1.31% c. 25% d. 28% 14. In problem 13, find the probability that among 15 randomly selected first year students, at most 5 will reach fourth year. a. 1.31% b. 1.34% c. 6.68% d. 85.16% 15. The secretary of XYZ law office found out that they are receiving an average of 5 calls from clients per day. Find the probability that the firm will receive exactly 3 calls on a particular weekday. a. 10% b. 10.14% c. 14.04% d. 15%