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Which of the following statements about 'probability' is true?

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Question: Which of the following statements about \'probability\' is true?

Options:

  1. Probability can only be calculated for discrete events.
  2. The sum of probabilities of all possible outcomes is always 1.
  3. Probability is independent of the sample space.
  4. Probability can never exceed 1.

Correct Answer: The sum of probabilities of all possible outcomes is always 1.

Solution: 

The sum of probabilities of all possible outcomes must equal 1, which is a fundamental principle in probability theory.

Which of the following statements about 'probability' is true?

Practice Questions

Q1
Which of the following statements about 'probability' is true?
  1. Probability can only be calculated for discrete events.
  2. The sum of probabilities of all possible outcomes is always 1.
  3. Probability is independent of the sample space.
  4. Probability can never exceed 1.

Questions & Step-by-Step Solutions

Which of the following statements about 'probability' is true?
  • Step 1: Understand what probability means. Probability is a way to measure how likely something is to happen.
  • Step 2: Recognize that every possible outcome of an event has a probability associated with it.
  • Step 3: Know that when you add up the probabilities of all possible outcomes, they should equal 1. This means that one of the outcomes must happen.
  • Step 4: Remember that this rule applies to any situation where you are calculating probabilities.
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