1.

Problem: An event with a probability close to zero is an event that is unlikely to happen.

Answer: True.

2.

Problem: Which of the following are valid probabilities?

Answer:

  1. 0.0000000004.
  2. 1.75%.
  3. 0.99.
  4. .

3.

Problem: If the weather forecasts predict an 88% chance of rain today, what is the probability it will not rain today?

Answer: 0.12.