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Questions and Answers
A jar contains 3 red marbles and 5 blue marbles. If you randomly select one marble, what is the probability of selecting a red marble?
A jar contains 3 red marbles and 5 blue marbles. If you randomly select one marble, what is the probability of selecting a red marble?
- 1/2
- 5/8
- 3/5
- 3/8 (correct)
What constitutes the sample space when rolling a standard six-sided die and flipping a coin?
What constitutes the sample space when rolling a standard six-sided die and flipping a coin?
- {1H, 1T, 2H, 2T, 3H, 3T, 4H, 4T, 5H, 5T, 6H, 6T} (correct)
- {H, T}
- {1, 2, 3, 4, 5, 6, H, T}
- {1H, 2T, 3H, 4T, 5H, 6T}
In probability, what is the definition of an 'event'?
In probability, what is the definition of an 'event'?
- The likelihood of a single outcome occurring.
- The set of all possible outcomes.
- A single possible result of an experiment.
- A collection of one or more outcomes from a sample space. (correct)
A bag contains 4 green balls, 5 red balls, and 6 yellow balls. What is the probability of NOT picking a red ball?
A bag contains 4 green balls, 5 red balls, and 6 yellow balls. What is the probability of NOT picking a red ball?
If two fair coins are flipped, what is the probability of getting at least one head?
If two fair coins are flipped, what is the probability of getting at least one head?
What does the term 'outcome' represent in the context of probability?
What does the term 'outcome' represent in the context of probability?
A spinner is divided into 5 equal sections, numbered 1 to 5. If you spin the spinner once, what is the probability of landing on an odd number?
A spinner is divided into 5 equal sections, numbered 1 to 5. If you spin the spinner once, what is the probability of landing on an odd number?
What is the sample space when choosing a letter from the word 'EXAMPLE'?
What is the sample space when choosing a letter from the word 'EXAMPLE'?
If the probability of an event occurring is 0.3, what is the probability of the event not occurring?
If the probability of an event occurring is 0.3, what is the probability of the event not occurring?
A deck of cards has 52 cards. You draw one card from the deck. What is the probability of selecting a heart?
A deck of cards has 52 cards. You draw one card from the deck. What is the probability of selecting a heart?
Flashcards
What is probability?
What is probability?
The likelihood or chance of something happening; used to predict outcomes and make decisions.
Outcome
Outcome
A possible result of an experiment or situation.
Event
Event
A collection of outcomes.
Probability of Events
Probability of Events
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Sample Space
Sample Space
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Study Notes
- Probability is the chance of something happening.
- Probability is for predicting outcomes and making decisions.
Key Terms
- Outcome means a possible result of an experiment or situation.
- Event is a collection of outcomes.
- Probability is the likelihood of an event occurring, expressed as a fraction, decimal, or percentage.
- Sample space is the set of all possible outcomes of an experiment
Outcomes
- When rolling a six-sided die, possible outcomes are the numbers 1 through 6.
- Outcomes are: {1, 2, 3, 4, 5, 6}.
Events
- Event is defined as rolling an even number.
- Outcomes that satisfy this event are 2, 4, and 6.
Probability of Events
- Likelihood of an event occurring is expressed as a fraction, decimal, or percentage.
Probability of Winning
- The probability of winning on a spinner is 4/8 (as a fraction), 0.50 (as a decimal), or 50% (as a percentage).
Sample Space
- When flipping a coin, the sample space is {Heads, Tails}.
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