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If the probability of an event occurring is 0.3, what is the probability of it n

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Question: If the probability of an event occurring is 0.3, what is the probability of it not occurring? (2023)

Options:

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

Correct Answer: 0.7

Exam Year: 2023

Solution: 

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

If the probability of an event occurring is 0.3, what is the probability of it n

Practice Questions

Q1
If the probability of an event occurring is 0.3, what is the probability of it not occurring? (2023)
  1. 0.3
  2. 0.7
  3. 0.5
  4. 0.1

Questions & Step-by-Step Solutions

If the probability of an event occurring is 0.3, what is the probability of it not occurring? (2023)
  • Step 1: Understand that the probability of an event occurring is given as 0.3.
  • 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 - 0.3.
  • Step 5: The result of the calculation is 0.7, which is the probability of the event not occurring.
  • Complementary Probability – The concept that the probability of an event not occurring is equal to 1 minus the probability of the event occurring.
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