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If the probability of an event is 0.7, what is the probability of the event not

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Question: If the probability of an event is 0.7, what is the probability of the event not occurring?

Options:

  1. 0.3
  2. 0.7
  3. 0.5
  4. 0.1

Correct Answer: 0.3

Solution: 

Probability of not occurring = 1 - P(event) = 1 - 0.7 = 0.3.

If the probability of an event is 0.7, what is the probability of the event not

Practice Questions

Q1
If the probability of an event is 0.7, what is the probability of the event not occurring?
  1. 0.3
  2. 0.7
  3. 0.5
  4. 0.1

Questions & Step-by-Step Solutions

If the probability of an event is 0.7, what is the probability of the event not occurring?
  • Step 1: Understand that the probability of an event occurring is given as 0.7.
  • Step 2: Know that the total probability of all possible outcomes is always 1.
  • Step 3: To find the probability of the event not occurring, subtract the probability of the event occurring from 1.
  • Step 4: Perform the calculation: 1 - 0.7.
  • Step 5: The result of the calculation is 0.3, which is the probability of the event not occurring.
  • Complementary Probability – The probability of an event not occurring is calculated as 1 minus the probability of the event occurring.
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