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Name _______________________________________ Date __________________ Class __________________ Probability Review UNIT 4 Unit Test: A 1. Kathleen rolled a number cube that has sides labeled 1 to 6. What is the probability that she rolled a 2 or a 4? A 1 6 B 1 3 C 1 2 D 3 4 7. A classroom has 7 blue chairs, 5 green chairs, 18 red chairs and 9 yellow chairs. If a chair is selected at random, which color is most likely to be chosen? 1 4 C 1 2 B 1 3 D 2 3 1 8 B 3 8 C 2 3 D 7 8 C 15 B 10 D 20 C 50 B 15 D 100 C 34 B 12 D 81 C 1 2 1 4 D 3 4 A 10 C 30 B 20 D 40 A 1 6 C 1 2 B 2 5 D 3 4 11. Melissa rolls two number cubes, each with sides that are labeled 1 to 6. What is the probability that both number cubes show a 1? 6. Aurelio can choose between 3 pairs of pants and 4 shirts. How many different outcomes are in the sample space? A 7 A 0 10. Jackson flipped a coin ten times. He flipped heads 4 times and tails 6 times. What is the experimental probability that Jackson will flip heads on his next flip? 5. Gene made a two-digit code. The first digit is odd. How many possible codes can he choose from? A 5 D yellow 9. The experimental probability that Daria 3 will win a game is . If she plays the 8 game 80 times, how many times can she expect to win? 4. The probability that John receives junk mail is 11 percent. If he receives 94 pieces of mail in a week, about how many of them can he expect to be junk mail? A 5 B green B 3. Kendra flips a coin 3 times. What is the probability that she flips tails all 3 times? A C red 8. Gisele spins a spinner that has equally sized yellow, green, blue and red sections. What is the probability that Gisele spins orange? 2. A bag contains 10 red marbles, 15 green marbles and 15 blue marbles. If Dashawn draws a marble from the bag, what is the probability that it is a red marble? A A blue A 1 6 C 1 24 B 1 12 D 1 36 Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor. 134 Name _______________________________________ Date __________________ Class __________________ UNIT 4 Probability 12. A sandwich shop offers 3 types of bread and 4 types of meat. How many different sandwiches consisting of 1 type of bread and 1 type of meat are possible? 16. Maria randomly selects a number from the list of numbers below. 56, 90, 88, 76, 12 What is the probability that she selects an even number? _______________________________________ ________________________________________ 13. The probability that Doreen wins a game 1 of chance is . Doreen plays the game 3 300 times, how many times can she expect to win the game? 17. _______________________________________ 14. Tyler’s Survey Results Eye Color Hair Color Brown Blue Brown 9 5 Blonde 12 14 Kelly’s Experimental Outcomes Trial Outcome 1 3, H 2 3, T 3 4, T 4 2, H 5 5, T Kelly conducted an experiment. In each trial she flipped a coin and rolled a number cube that has sides labeled 1 to 6. The results are shown above. What is the experimental probability that her next flip will be tails? Tyler recorded the hair color and eye color of students walking in the hallway outside her homeroom. What is the experimental probability that the next student she sees will have blue eyes? ________________________________________ 18. Colleen wrote each of the letters A through Z on a separate piece of paper and put them in a hat. If she randomly selects a piece of paper from the hat, what is the probability that the letter on the piece of paper will be a vowel (A, E, I, O or U)? _______________________________________ 15. Brianna rolls a number cube that has sides labeled 1 to 6 and flips a coin. Write the list of possible outcomes. _______________________________________ _______________________________________ ________________________________________ _______________________________________ 19. Divya planted a garden with equal numbers of roses, daffodils, and tulips. If she randomly selects a flower, what is the probability that it is a lily? _______________________________________ _______________________________________ ________________________________________ Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor. 135 UNIT 4 Probability Unit 4 Test: A 1. B 2. A 3. A 4. B 5. C 6. B 7. C 8. A 9. C 10. B 11. D 12. 12 sandwiches 13. 100 14. 19 40 15. (1, H), (1, T), (2, H), (2, T), (3, H), (3, T), (4, H), (4, T), (5, H), (5, T), (6, H), (6, T) 16. 1 or 100% 3 5 5 18. 26 17. 19. 0