How to Use the Addition Rule for Probabilities

The addition rule for probabilities determines the chance of either mutually exclusive or overlapping events happening, using ...
Scientific American

What is Bayes's theorem, and how can it be used to assign probabilities to questions such as the existence of God? What scientific value does it have?

Chris Wiggins, an associate professor of applied mathematics at Columbia University, offers this explanation. A patient goes to see a doctor. The doctor performs a test with 99 percent ...