Quizzes: Classical definition of probability

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3. An event that will never occur.

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2. 1

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2. The event is certain to happen.

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3. The event is equally likely to happen or not happen.

If you flip a fair coin, what is the probability that it will land on heads?

  1. 0
  2. 0.25
  3. 0.5
  4. 1
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3. 0.5

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2. 1/3

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1. 1/2

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1. 3/8

In a class of 30 students, 18 are girls and 12 are boys. What is the probability that a randomly chosen student is a girl?

  1. 3/5
  2. 1/2
  3. 1/3
  4. 2/3
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1. 3/5

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4. 0.0001%

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1. 0.001

You are spinning a fair spinner with four equal sections labeled A, B, C, and D. What is the probability that the spinner lands on A?

  1. 1/4
  2. 1/3
  3. 1/2
  4. 1
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1. 1/4


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