Praxis Elem. Ed- Math(5003) Chpt 16 - Probability Concepts Quiz Questions

13. A bag has been filled with 35 red marbles, 25 green marbles, 25 blue marbles and 15 orange marbles. What is the theoretical probability that someone can reach in and randomly pick an orange marble? 1 out of 100, which is 1/100 (1%) 15 out of 25, which is 15/25 (60%) 15 out of 85, which is 15/85 (18%) 15 out of 100, which is 15/100 (15%)

15 out of 100, which is 15/100 (15%)

7. All of the letters that spell MISSISSIPPI are put into a bag. What is the probability of selecting a vowel, and then after replacing the letter, also drawing an S? 16/110 16/121 8/55 4/11

16/121

18. You and your friend are among 15 students who will give speeches in front of the class. The teacher will randomly choose one of the 15 students to give the first speech. Each student has an equal probability of being chosen. Find the probability that either you or your friend will be chosen to give the first speech. 1/7 2/15 1/15 1/5

2/15

21. You roll a 6-sided die. What is the probability that the number rolled will be odd or prime? (1 is not a prime number) 5/6 1/6 1/3 2/3

2/3

17. Fifty tickets are sold for a raffle. You buy 2 tickets and your sister buys 4 tickets. One ticket is randomly chosen as the winning ticket. What is the probability that you or your sister wins the raffle? 4/25 1/25 3/25 2/25

3/25

25. What is the probability of picking a blue balloon if there are 3 blue balloons, 1 red balloon, and 1 yellow balloon? 1/5 4/5 3/5 2/5

3/5

6. Kyle works at a local music store. The store receives a shipment of new CDs in a box. In the shipment, there are 10 country CDs, 5 rock CDs, 12 hip hop CDs, and 3 jazz CDs. What is the probability that the first CD that Kyle pulls from the box will NOT be hip hop? 2/5 3/5 18/30 12/30

3/5

16. There are 95 white pieces of paper in a hat along with 5 blue pieces of paper. What is the theoretical probability that a blind-folded person draws a blue piece of paper on the first attempt? 5 out of 5, which is 5/5 (100%) 1 out of 100, which is 1/100 (1%) 5 out of 95, which is 5/95 or 1/19 (5.3%) 5 out of 100, which is 5/100 or 1/20 (5%)

5 out of 100, which is 5/100 or 1/20 (5%)

20. A normal deck of cards has 52 cards in it with four different suits (hearts, spades, clubs, diamonds). What is the probability of drawing an ace of spades or a 3 (from any suit) from a normal deck of cards? 5/52 2/13 2/52 1/13

5/52

2. The probability of winning a prize at a ball toss at a carnival is 2/7. What is the probability of not winning a prize? 3/7 5/7 2/7 7/7

5/7

5. Using a spinner with 12 equal sections numbered 1 through 12, what is the probability that Jim will spin a number less than 8? 2/3 7/12 5/6 3/4

7/12

23. There are two ways to play a game and win. Each comes with its own probability of winning. Game option A has a probability of 1/4 and game option B has a probability of 1/8. Which option has the higher probability? Both A Neither B

A

15. Theoretical probability is equal to: The number of possible outcomes divided by the total number of favorable outcomes. The number of favorable outcomes multiplied by the total number of possible outcomes. The number of favorable outcomes divided by the total number of possible outcomes. The number of possible outcomes subtracted from the total number of favorable outcomes.

The number of favorable outcomes divided by the total number of possible outcomes.

22. An event that will never happen has a probability of what? .33 1 0 .5

0

14. Jake has been flipping a coin for 3 hours straight and he is about to flip it for the 500th time. What is the theoretical probability that Jake gets heads on this last flip? 3 out of 500 (0.6%) because it has taken 3 hours to flip 500 times. 1 out of 2 (50%) because no matter how many times a coin is flipped, each flip has just two possible outcomes, heads or tails. 2 out of 500 (0.4%) because there are two possible outcomes, heads or tails in 500 flips. 2 out of 1 (200%) because there are two possible outcomes, heads or tails and one flip.

1 out of 2 (50%) because no matter how many times a coin is flipped, each flip has just two possible outcomes, heads or tails.

10. Using a standard deck of 52 cards, what is the probability of selecting a 4 and then after not replacing the card, selecting another 4? 3/51 1/169 1/221 12/2652

1/221

4. Kyle works at a local music store. The store receives a shipment of new CDs in a box. In the shipment, there are 10 country CDs, 5 rock CDs, 12 hip hop CDs, and 3 jazz CDs. What is the probability that Kyle will select a jazz CD from the box, and then, without replacing the CD, select a country CD? 10/320 1/32 1/29 10/290

1/29

1. Kyle works at a local music store. The store receives a shipment of new CDs in a box. In the shipment, there are 10 country CDs, 5 rock CDs, 12 hip hop CDs, and 3 jazz CDs. What is the probability that the first CD Kyle chooses from the box will be country? 10/27 10/30 1/3 2/3

1/3

26. What is the probability of rolling either a 3 or a 6 when rolling a die? 2/3 1/3 1/6 5/6

1/3

3. Kate and Kyle are playing a game. They must flip a coin and spin a spinner that has 12 equal sections numbered 1 through 12. What is the probability that Kyle will flip a heads and spin the spinner and get an even number? 1/6 1/4 1/2 1/10

1/4

8. All of the letters of MISSISSIPPI are put in a bag. What is the probability of selecting an M and then after not replacing the letter, selecting a P? 2/121 1/55 1/121 1/110

1/55

11. If you roll a die three times, what is the probability of rolling only even numbers? 1/4 1/6 1/2 1/8

1/8

9. Using a standard deck of cards (which has 26 red cards and 26 black cards, with 13 cards of every suit), what is the probability of selecting a red card, and then after replacing the card, selecting a heart card? 1/8 338/2652 312/2652 26/221

1/8

19. The numbers 1 through 20 are written on separate slips of paper and placed in a hat. One of the slips is randomly drawn. What is the probability that either a prime number or a number less than 10 is drawn? 11/20 7/20 9/20 13/20

13/20

12. Which of the following statements is true? Theoretical probability is a method to express the likelihood that something will occur. All of the statements are true. Theoretical probability is a ratio that can be expressed as a fraction. Theoretical probability is calculated by dividing the number of favorable outcomes by the total possible outcomes.

All of the statements are true.

24. A probability of 1 means what? It means something will always happen. It means something is not very likely to happen. It means something is very likely to happen. It means something will never happen.

It means something will always happen.