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Transcript
_________________________________________’s probability quiz review.
Match the vocabulary word with its definition.
1. Favorable outcomes D
A. the possible results of an experiment
2. Outcomes A
B. an outcome or a collection of outcomes
3. Event B
C.
4. Probability of an event E
D. the outcomes for a specified event
5. Theoretical probability C
E. the likelihood that an event will occur
𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑓𝑎𝑣𝑜𝑟𝑎𝑏𝑙𝑒 𝑜𝑢𝑡𝑐𝑜𝑚𝑒𝑠
𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑝𝑜𝑠𝑠𝑖𝑏𝑙𝑒 𝑜𝑢𝑡𝑐𝑜𝑚𝑒𝑠
Use the spinner to find the probability. The spinner is divided into equal parts.
6. What is the probability that the spinner stops on a multiple of 3? 3/10
7. What is the probability that the spinner stops on a multiple of 4? 2/10 = 1/5
8. What are the odds in favor of stopping on a number greater than 8? 2/8 = 1/4
9. What are the odds in favor of a stopping on a number less than 5? 4/6 = 2/3
10. If you spin the spinner 50 times, how many times do you expect it to stop on 10?
x/50 = 1/10, x = 5 times expected to land on 10
Each letter in the word SUCCESSES is written on separate slips of paper and placed in a bag. A letter is chosen
at random from the bag.
11. What is the probability that the letter chosen is an S? 4/9
12. What is the probability that the letter chosen is a vowel? 3/9 = 1/3
13. What are the odds in favor of choosing a consonant? 6/3 = 2/1
14. You plant 48 seeds of a certain flower and 32 of them sprout. Find the experimental probability that the
next flower seed planted will sprout. 32/48 = 2/3
The circle graph shows which juice blend people chose as their favorite in a taste test.
15. What is the probability that a person chosen at random chose Juice B?
32/90 = 16/45
16. What are the odds in favor of choosing a person at random who chose Juice A?
37/53
Use the counting principle to find how many outcomes are possible.
17. Choose a turkey, roast beef, or ham with white, whole wheat, or rye bread.
9 possibilities
18. Choose a sedan, truck, SUV, or minivan in red, blue, black, or green.
16 possibilities
Tell whether the events are independent or dependent. Then find the P(A and B).
20. You randomly choose a marble from a bag of 8 green marbles and 5 blue marbles. You randomly draw
another marble without replacing the first marble. What is the probability that you draw two blue marbles in a
row? Dependent; P = 5/39
21. You are beginning a 1000-piece jigsaw puzzle that is in the shape of a rectangle. You randomly choose a
piece from the box. What is the probability that you pick a corner piece and then another corner piece?
Dependent; P = 1/83,250
22. You roll a number cube two times. What is the probability that you roll an odd number on the first roll and
then a 4 on the second roll? Independent; P = 1/12
23. You flip a coin three times. What is the probability that you get three heads in a row?
Indepdent; P = 1/8