Question

For the complement of event \(A\), which probability relation is correct?

Options

• \(P(A') = P(A) - 1\)

• \(P(A') = 1 - P(A)\)

• \(P(A') = 1 + P(A)\)

• \(P(A') = P(A)\)

Answer 1

The complement and the event partition the entire sample space. Their probabilities therefore add to 1, giving \(P(A') = 1 - P(A)\).