If the probability of event A is 0.4 and the probability of event B is 0.5, what

Practice Questions

Q1
If the probability of event A is 0.4 and the probability of event B is 0.5, what is the probability of both A and B occurring if they are independent?
  1. 0.2
  2. 0.4
  3. 0.5
  4. 0.9

Questions & Step-by-Step Solutions

If the probability of event A is 0.4 and the probability of event B is 0.5, what is the probability of both A and B occurring if they are independent?
  • Step 1: Understand that the probability of event A is 0.4.
  • Step 2: Understand that the probability of event B is 0.5.
  • Step 3: Know that events A and B are independent, meaning the occurrence of one does not affect the other.
  • Step 4: Use the formula for independent events: P(A and B) = P(A) * P(B).
  • Step 5: Substitute the values into the formula: P(A and B) = 0.4 * 0.5.
  • Step 6: Calculate the result: 0.4 * 0.5 = 0.2.
  • Step 7: Conclude that the probability of both A and B occurring is 0.2.
  • Independent Events – The probability of two independent events occurring together is the product of their individual probabilities.
  • Probability Calculation – Understanding how to calculate the probability of combined events using multiplication for independent events.
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