Mrs. Gill's Math Class - Home
Name: _________________________________________Practice Test: Chapter 9_______ 1. Suppose Lauren has an 80% chance of winning a raffle. Which is the best description of Sally’s chance of winning?a. impossibleb. unlikelyc. likelyd. certainFor Problems 2-4, what is the total number of outcomes in each sample space?_______ 2. Tossing a coin and spinning a spinner with five equal sections, 1-5a. 2b. 7c. 10d. 15_______ 3. Rolling two number cubesa. 8b. 12c. 18d. 36_______ 4. Choosing water, iced tea, or lemonade; with lemon or lime twist, served in a small or large glassa. 7b. 10c. 8d. 12For Exercises 5 and 6, Vernon tossed a coin 20 times. The results were 8 heads and 12 tails._______ 5. What is the experimental probability of tossing heads?a. 1/8b. 2/5c. 1/2d. 3/5_______ 6. What is the best comparison between the theoretical and experimental probability of tossing heads?The theoretical probability is greater than the experimental probability.The theoretical probability is less than the experimental probability.The theoretical probability is equal to the experimental probability.The theoretical probability is not related to the experimental probability._______ 7. A bag contains 2 red checkers and 6 black checkers. A checker is selected, kept out of the bag, and then another checker is selected. What is P(black, then red)?a. 1/9b. 3/16c. 3/14d. 9/1644577001841500_______ 8. What is P(2, then 2) when spinning the spinner shown at the right twice? 1/41/161/561/64A number cube is rolled and a letter is selected from the word GIRAFFE. In Problems 9 and 10, find each probability._______ 9. P(4 and F)a. 1/21b. 1/6c. 2/7d. 1/42_______ 10. P(even number and vowel)a. 1/2b. 3/7c. 3/14d. 1/14_______ 11. In how many ways can five models line up to have their picture taken?a. 120b. 60c. 25d. 20_______ 12. Mrs. Blair will select a president and a vice-president from a committee of 8 members. In how many different ways can a president and a vice president be chosen from the committee?a. 1,680b. 336c. 56d. 1513. How many ways can Gary, Cayla, and Pinak finish a bicycling race in first, second, and third place?Answer: ___________4457700908050014. Derek’s family is planning a trip to Asia. If they want to visit each of the cities listed in the table at the right, in how many different orders can they do so?Answer: __________15. Employees at a company are given a five-digit employee identification code. If each digit cannot be repeated, how many different codes are possible?Answer: __________16. Adrian spun a spinner with 5 equal sections 85 times. Each section of the spinner was a different color. One of the colors was red. The outcome of “red” occurred 20 times. Compare the theoretical to the experimental probability of spinning red.Experimental Probability: _________ Theoretical Probability: _________How do they compare? ___________________________________________________________________17. Farah rolled a number cube 84 times. The outcome of “2” occurred 12 times. Compare the theoretical to the experimental probability of rolling a 2.Experimental Probability: _________Theoretical Probability: _________How do they compare? _________________________________________________________________For Problems 18 and 19, find the total number of outcomes that will be in each sample space.18. Buying bedroom furniture if you can select one each from 8 dressers, 3 beds, 7 lamps, and 4 night tablesAnswer: ________19. Tossing a dime, a quarter, a penny, and rolling a number cubeAnswer: ________20. A bag contains 1 red, 2 blue, 4 orange, and 3 purple marbles. Elyse removes one marble from the bag and does not replace it. She then removes a second marble at random.a. Does this represent an independent or dependent event?Answer: ______________________b. What is the probability that Elyse picks a purple marble and then a red marble?Answer: __________c. What is the probability that Elyse picks a purple marble both times?Answer: __________377190011430000For Problems 21-23, use the spinner to the right.21. Find P(vowel)Answer: ___________22. Find P(not D) Answer: ____________23. Find P(G)Answer: __________54800517907000For problems 24-25, use the graph of a survey of 24 seventh-grade students.24. Suppose 200 seventh-grade students were surveyed. How many can be expected to say that roller skating is their favorite hobby?Answer: _________25. Suppose 48 seventh-grade students were surveyed. How many can be expected to say that singing or building things is their favorite hobby?Answer: ___________26. The University of Oregon’s football team has different options for their uniforms. They can wear black or yellow shoes, and green, yellow, black, or white socks. Draw a tree diagram to find the sample space. 27. In the last problem, what is the probability of choosing green socks?Answer: _______28. What is the probability of choosing black shoes and green socks?Answer: ________ ................
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