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Practice - Probability Ratios and Likelihood
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Directions: Ten candles (3 red, 2 blue, and 5 green) are lined up. A student is asked to randomly choose and light one candle. Answer the following questions relating to this situation.

candles

1.
a) What is the probability that the student picked one blue candle to light?
Choose:
1/10
2/10
3/10
5/10

b) Which choice describes the likelihood of this occurrence?
Choose:
unlikely
 highly unlikely likely highly likely

 

 

2.
a) What is the probability that the student picked one green candle to light?
Choose:
1/10
2/10
3/10
5/10

b) Which choice describes the likelihood of this occurrence?
Choose:
unlikely
 highly likely neither likely nor unlikely

 

 

3.
a) What is the probability that the student picked one candle from the red or the green candles to light?
Choose:
3/10
5/10
7/10
8/10

b) Which choice describes the likelihood of this occurrence?
Choose:
unlikely
 highly likely neither likely nor unlikely

 

 

4.
What is the probability of choosing a red candle to light, expressed as a percent?
Choose:
3%
0.3%
30%
33 1/3%

 

 

5.
a) This candle situation is an example of a uniform probability model?
Choose:
TRUE
FALSE
Cannot be determined

b) Which statement best supports your answer?
Choose:
The probability of choosing any candle is equally likely.
The probabilities of the red, blue, and green candles are not the same.
The probability of a lighted candle is always the same.
The probability of a not lighted candles is always the same.

 

 

6.
The probability of choosing a blue candle to light, is
Choose:
1/5
0.2
20%
all of these answers

 

 

7.
a) What is the probability that the candle that is lit will be either a red, blue or green candle?
Choose:
20%
30%
50%
100%

b) Which choice describes the likelihood of this occurrence?
Choose:
impossible
 highly unlikely highly likely certain

 

 

8.
a) What is the probability that the candle that is lit will be a white candle?
Choose:
0%
20%
30%
50%

b) Which choice describes the likelihood of this occurrence?
Choose:
impossible
 highly unlikely highly likely certain

 

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